Question
A is 5 years younger to B, and B is 3 times older than
C. If C was 10 years old four years ago, what will be the age of A after 6 years?Solution
• C’s age four years ago was 10 years, so the current age of C = 10 + 4 = 14 years. • B is 3 times older than C, so the age of B = 3 × 14 = 42 years. • A is 5 years younger than B, so the age of A = 42 - 5 = 37 years. • After 6 years, A’s age will be = 37 + 6 = 43 years.
- The ratio of pens to pencils in a shop is 8:5. If 24 pens are sold and 21 pencils are added, the number of pens and pencils becomes equal. Find the origina...

- If 72% of (P - Q) is equal to 30% of 60% of (P + Q), then find the value of Q:P.
- Kiran shared 288 toffees among his three friends Sonu, Monu and Tanu in the ratio 2:3:7 respectively. Find how many more toffees Tanu received than Sonu.
The entry ticket at a fun park was increased in the ratio 7 : 9, due to which footfalls fell in the ratio 13 : 11. What is the new daily collection (in ...
The incomes of two colleagues 'X' and 'Y' are in the ratio 6:11. 'X' spends 70% of his income, while 'Y' spends 72.72% of his income. Find the ratio of ...
Ratio of cats to dogs in a shelter is 4:3. If 16 cats are adopted and 20 more dogs arrive, their numbers become the same. What was the initial number of...
Amit had 650 pens. He gave 40% of them to Suman and Rishi in the ratio 3:2. Find the difference between the number of pens left with Amit and the number...
- In a classroom, the ratio of the number of left-handed to right-handed students is 5:6. When 10 more students of each type join, the ratio changes to 15:16...
The radii of two solid right circular cylinders are 6 cm and 4 cm respectively and their heights are (h+1) cm and (2h+1) cm respectively. If the areas o...