Question

The product of two rational numbers is - 21 / 40 . If one of the number is 7 / 5 then the other number is

Answer 1

Answer:

The other number is -3/8

Answer 2

Answer: -3/8

Step-by-step explanation:

Let the number be y

we know that product of 7/5 and y is -21/40

ie, 7/5 x y = -21/40

ie, y = -21/40 ÷ 7/5

ie, y = -21/40 x 5/7

ie, y = -3/8

HOPE THIS HELPS....