Question

Four-Fifth of a number is 64. What is half of that number?

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Answer 1

80

Since we are given that 4/5 of a certain number is 64. So, Hence the number is 80.

Answer 2

Answer:

5/4 * x = 64

x= 5/4 *64

x=80

half of 80 is 40

40 is the answer