Question

2/5 = m/70 please solve

Answer 1

Answer:  The required solution is m = 28.

Step-by-step explanation:  We are given to solve the following equation :

$\dfrac{2}{5}=\dfrac{m}{70}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

We will be using the following rule of cross-multiplication :

$\dfrac{a}{b}=\dfrac{c}{d}\\\\\\\Rightarrow a\times d=c\times b.$

From equation (i), we have

$\dfrac{2}{5}=\dfrac{m}{70}\\\\\\\Rightarrow 2\times70=m\times 5\\\\\Rightarrow 5m=140\\\\\Rightarrow m=\dfrac{140}{5}\\\\\Rightarrow m=28.$

Thus, the required solution is m = 28.

Answer 2

2/5=m/70
Use cross multiply
70*2=5*m
140=5m
Divided 5 to each side
140/5=5m/5
m=28
Check:
2/5=m/70
Substitute m with 28
2/5=28/70
2/5=4/10
2/5=2/5. As a result, m=28. Hope it help!