Mixture - class-XII
Description: mixture | |
Number of Questions: 43 | |
Created by: Priya Bakshi | |
Tags: ratio and proportions maths business maths mixture ratio and proportion mathematical logic comparing quantities |
The difference between the numerator and the denominator of a fraction is $5$ If $5$ is added to the denominator the fraction is decreased by $\displaystyle 1\frac{1}{4}$ then the value of the fraction will be equal to:
Seats for Mathematics, Physics and Biology in a school are in the ratio $5 : 7 : 8$. There is a proposal to increase these seats by $40\%$, $50\%$ and $75\%$ respectively. What will be the ratio of increased seats?
The present population of a city is 8000 if it increases by $10\%$ during the first year and by $20\%$ during the second year , then population after two years will be
The population of a bacteria culture doubles in number every 12 minutes. The ratio of the number of bacteria at the end of 1 hour to the number of bacteria at the beginning of that hour is
A shopkeeper brought two $TV$ sets at $Rs. 10,000$ each. He sold one at a profit of $10\%$ and the another at a loss of $10\%$. Find his total profit or loss.
A year ago, the cost of Maruti and Figo are in the ratio of $3 : 4$. The ratio of present and past year costs of Maruti and Figo are $3 : 2$. Find the ratio of present costs
One year ago, the ratio between Ram's and Shyam's salaries was $3 : 5$. The ratio of their individual salaries of last year and present year are $2 : 3$ and $4 : 5$ respectively. If their total salaries for the present year is $Rs. 8600$, find the present salary of Ram ?
The ratio of the number of student studying in schools A, B and C is $6:8:7$ respectively if the number of student studying in each of the schools is increased by $20\%,15\%$ and $20\%$ respectively then what will be the new ratio of the number of student in school A, B and C ?
Suppose $x$ and $y$ are inversely proportional and positive. If $x$ increases $p\%$ then $y$ decreases by
A jar contained a mixture of two liquids A and B in the ratio 7 : 2. When 18 litres of mixture was taken out and 18 litres of liquid B was poured into the jar. This ratio became 2 : 3. The quantity of liquid A contained in the jar initially was:
If a line with direction ratio $2:2:1$ intersects the line $\dfrac {x-7}{3}=\dfrac {y-5}{2}=\dfrac {z-3}{1}$ and $\dfrac {x-1}{2}=\dfrac {y+1}{4}=\dfrac {z+1}{3}$ at $A$ and $B$ then $AB=$
The L.C.M. of two numbers is 48. The numbers are in the ratio 2:3. Then sum of the number is:
The sides of a triangle are $10$ cm,$10$ cm and $12$ cm. If each of the two equal sides is increased in the ratio $5\colon4$ but the third side remains unchanged, in what ratio has its perimeter been increased?
Present ages of Amit and his father are in the ratio 2:5 respectively. Four years hence the ratio of their ages becomes 5:11 respectively. What was the father's age five years ago?
The difference of the squares is of two numbers is 80% of the sum of their squares The ratio of the larger number to the smaller number is
If a, b, c, d are positive real number such that $\frac {a}{3}=\frac {a+b}{4}=\frac {a+b+c}{5}=\frac {a+b+c+d}{6}$, then $\frac {a}{b+2c+3d}$ is
The incomes of A, B and C are in the ratio 7 : 9 : 12 and their spendings are in the ratio 8 : 9 : 15. If A saves $\displaystyle \left ( 1/4 \right )^{th}$ of his income then?
The least whole number which when subtracted from both the terms of the ratio $6:7$ gives a ratio less than $16:21.$
The length of the ribbon was originally $30cm$. It was reduced in the ratio $5:3$. What is its length now?
Decrease $245$ kg by $7 : 4$
After decreasing $60$ in the ratio $3 : 4$ we get?
If the price of a pen increases from Rs $15$ to Rs $20$, then the price has increased in the ratio of?
The price of pencil box is Rs $70$. If the price of pencil box is reduced by $14 : 13$ what will be the reduced price of pencil now?
The multiplying ratio which changes Rs $90$ into Rs $63$ is ____
Decreasing $540$ by $2 : 3$ we get?
If $8 : 9$ is equal to $456: x$, then the value of $x$ is
In what ratio we must increase Rs. $750$ to obtain Rs. $1000$?
Increasing Rs $40$ in the ratio $5 : 4$ we get?
Gautam's monthly salary is Rs $20000$. His salary is increased by $4 : 5$ to his new salary?
Well-Grown potting soil is made from only peat moss and compost in a ratio of $3$ pounds of peat moss to $5$ pounds of compost. If a bag of Well-Grown potting soil contains $12$ pounds of potting soil, find how many pounds of peat moss it contains.
Two numbers are in the ratio of $1:2$. If $7$ be added to both, their ratio changes to $3:5$. The greater number is.
Eight people are planning to share equally the cost of a rental car. If one person withdraws from the arrangement and the others share equally the entire rental of the car, then the share of each of the remaining persons increased by.
Negation of ''A is in Class $X^{th}$ or B is in $XII^{th}$'' is
$A, B$ and $C$ enter into partnership by making investments in the ratio $3:5:7$. After a year, $C $ invests another Rs. $337600$ while $A$ withdraws Rs. $45600$. The ratio of investments then changes to $24:59:167$. How much did $A$ invest initially?
Choose the correct answer from the alternatives given.
The ratio of length of two trains is 5 : 3 and the ratio of their speed is 6: 5. The ratio of time taken by them to cross a pole is
Choose the correct answer form the alternatives given.
The ratio of spirit and water in a mixture is 1: 3. If the volume of the solution is increased by 25% by adding spirit only. What is the resultant ratio of spirit and water?
The expenses on wheat, meat and vegetables of a family are in the ratio 12: 17 : 3. The prices of these articles are increased by 20%, 30% and 50% respectively. The total expenses of the family on these articles are increased by
The ratio of number of boys and girls in a school of 720 students is 7 : 5 . How many more girls should be admitted to make the ratio 1 : 1 ?