Arithmeticmedium · Past Paper
If $a:b = 2:3$ and $b:c = 4:5$, then $a:b:c$ is:
A8:12:15
B2:4:5
C8:10:15
D4:6:15
✓ Correct Answer: A — 8:12:15
Multiply first ratio by 4 and second by 3 to make 'b' common: 8:12 and 12:15. So a:b:c = 8:12:15.
Share this question
More from Arithmetic
- If CI for the 2nd year on a certain sum at 10% is Rs 220, find the sum.
- If x:y = 2:3, find (5x-2y) : (5x+2y).
- The difference between the compound interest compounded semi-annually and the simple interest on a certain sum of money at 10% per annum for 1 year is Rs 25. Find the sum.
- A container contains 80 liters of milk. From this, 8 liters of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container?
- A man loses 10% by selling a book for Rs. 144. At what price should he sell it to gain 10%?