Question

the product of two rational number is 117 upon 40 if one of them is - 13 upon 5 find the other

Answer 1

-13/5 × X = 117/40 so, we will divide 117/ 40 by -13/5 to get another one 117/40÷-13/5 = 117/40 × 5/-13 = 9 / -8 and after writing it into standard form it will be -9/8

Answer 2

Hello friend

Good morning

Given that the product of two rational number is 117/40

One of those rational number is -13/5

Let the another rational number be x.

Therefore -13/5 × x = 117/40

=> x = 117/40 × -5/13

=> x = 9/-8

=> x = -9/8

VERIFICATION :-

RHS = 117/40

LHS = -9/8 × -13/5

= 117/40

Hence, proved

LHS = RHS

I hope it will help u..