Question

What should be multiplied to 16 / 5 so that the product is 1?

Answer 1

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16/5 × 5/16 = 1

Answer 2

let "a" be the number to be multiplied to 16 / 5

a × 16 / 5 = 1

a = 1 ÷ 16 / 5

= 1 × 5 / 16

= 5 / 16

answer is 5 / 16.

Also, the reciprocal of 16 / 5 is 5 / 16.

for the product to be 1, the numbers should be reciprocal to each other

hope it helps:)