Question

what is 45% of a number if 18.75% of the same number is 75?

Answer 1

let the number be a

18.75 x a = 75

   100

solving the above,

a =  400

45 x 400 = 180

  100

therefore, 45% of 400 is 180

Answer 2

let the number be y

18.75y= 75

100

solving the above,

y= 400

$\frac{45 \times 400}{100} = 180$

Hence, 45% of 400 is 180.

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