Question

Find the number whose 21% is 42​

Answer 1

Answer:

Let the no. of x

$\frac{21}{100} \times x = 42 \\ x = 42 \times \frac{100}{21} \\ x = 200$

Answer 2

Step-by-step explanation:

let the number be x.

then, 21% of x = 42

=> 21x /100 = 42 [ so, per cent = per/100 ]

so, by cross multiplication

=> 21x = 42 × 100

=> 21x = 4200

=> x =4200/21

so, x = 200

hence, the number is 200.

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