Question

The product of two numbers is 3.92. If one of them is 1.40 then, find the other number.

• A. 2.4
• B. 1.44
• C. 2.8
• D. 3.2

Answer 1

The correct option is C

2.8

1.40 $\times$ other number = 3.92

$\Rightarrow$ other number = 3.92 $÷$ 1.4

$\Rightarrow$ other number = $\frac{3.92}{1.4}$
Multiplying both numerator and denominator by 10 we get
$\Rightarrow$ other number = $\frac{39.2}{14}$

$\Rightarrow$ other number = 2.8

$\therefore$ The other number is 2.8