There is a ratio of 5 : 4 between two numbers. If 40% of the first number is 12, then what would be 50% of the second number is ?

Question: There is a ratio of 5 : 4 between two numbers. If 40% of the first number is 12, then what would be 50% of the second number is ?

Solution:
Let the numbers be 5x and 4x respectively

According to the question,
⇒ 5x × (40/100) = 12
⇒ 2x = 12
∴ x = 6

Now,
50% of the second number is,
= 4x of 50%
= 4 × 6 × (50/100)
= 12

So 50% of the second number is 12.