# The Product of Two Rational Numbers is 15. If One of the Numbers is −10, Find the Other. - Mathematics

Sum

The product of two rational numbers is 15. If one of the numbers is −10, find the other.

#### Solution

$\text{Let the other number be x .}$
$\therefore x \times ( - 10) = 15$
$\text{or}\ x = \frac{15}{- 10} = \frac{3}{- 2}$
$\text{So, the other number is} \frac{- 3}{2} .$

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#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 1 Rational Numbers
Exercise 1.7 | Q 3 | Page 36