Question

Find a number whose
(a) 10% is 20
(b) 20% is 30
(c) 45% of 540
(d) 75% is 360​

Answer 1

Answer:

Step-by-step explanation:

a. 10% of 20

as 20 x 10%

20 x 10/100

200/100

=2

b. 20% of 30

=30 x 20%

=30 x 20/100

=600/100

=6

c. 45% of 540

=540 x 45%

=540 x 45/100

=24300/100

=243

d. 75% of 360

=360 x 75%

=360 x 75/100

=27000/100

=270

Answer 2

Answer:

(a) 10% is 20 ⇒  $\frac{10}{100}$ × x = 20

                      ⇒x = $\frac{20 * 100 }{10}$

                      ⇒200

(b)20% is 30 ⇒  $\frac{30 * 100}{20}$ ⇒ 150

(c)45% of 540 ⇒ $\frac{540 * 100}{45 }$ ⇒ 1200

(d) 75% is 360​ ⇒ $\frac{360 * 100}{75}$ ⇒ 480

I hope it will help you!