Question

a. 8% of which number is 18? b. 12% of what amount is 521? c. 16% of what length is 36 cm?​

Answer 1

➡️ ANSWER

1. Let, the number be x.

$8\% \times x = 18$

$⟼ \: \frac{8}{100} \times x = 18$

$⟼ \: x = 18 \times \frac{100}{8}$

$⟼ \: x = \frac{1800}{8}$

$⟼ \: x = 225$

2. Let the amount be x.

$12\% \times x = 521$

$⟼ \: \frac{12}{100} \times x = 521$

$x = 521 \times \frac{100}{12}$

$⟼ \: x = \frac{52100}{12}$

$⟼ \: x = 4341.67$

3. Let the length be x.

$16\% \times x = 36cm$

$⟼ \: \frac{16}{100} \times x = 36cm$

$⟼ \: x = 36cm \times \frac{100}{16}$

$⟼ \: x = \frac{3600cm}{16}$

$⟼ \: x = 225cm$

Answer 2

Answer:

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