Question

(ii) 42 is 30% of what number?
with full solution.​

Answer 1

Answer:

let the number be x

so 30% of x = 42

therefore, 30×x/100 = 42

x = 42×100/30

x = 140

therefore 30% of 140 is 42.

Answer 2

Let the number be x.

30% of x is 42

$\implies\sf \dfrac{30}{100} \times x = 42$

$\implies\sf \dfrac{3}{10}x = 42$

$\implies\sf x = \dfrac{10\times 42}{3} = 140$

Therefore, the number is 140.