Question

( ):9::10:45
find the missing number
by using ratio
​

Answer 1

Answer:

$we \: know \: that \: the \: number \: = product \: of \: exterms \: \times product \: of \: means$

$exterms \: = x \times 45$

$means \: = 9 \times 10$

$product \: of \: exterms \: = 45x$

$product \: of \: means \: = 90$

$x = \frac{90}{45}$

$x = 2$