Question

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Answer 1

Answer:

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Answer 2

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1. Find :

( I ) 20 % of 450

➜ $\large{\frac{20}{100}}$ × 450

➜ 45 × 2

➜ ★$\large{\boxed{=\:90}}$★

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( ii ) 75 % of 1500

➜$\large{\frac{75}{100}}$ × 1500

➜ 75 × 15

➜ ★$\large{\boxed{=\:1125}}$★

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( iii ) 45 % of 250

➜ $\large{\frac{45}{100}}$ × 250

➜ 45 × 2.5

➜ ★$\large{\boxed{=\:112.5}}$★

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( iv ) 15 % of 1.5 m

➜★$\large{\boxed{0.225m}}$★

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2.find the whole quantity if

( I ) 15 % of it is 45

➜ let the whole be x

➜ 15 % of x = 45

➜ $\large{\frac{15}{100}}$ × X = 45

➜ 15 x = 45 × 100

➜ x = $\large{\frac{4500}{15}}$

➜ ★$\large{\boxed{X\:=\:300}}$★

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( ii ) 30 % of it is 270

➜ let the whole be x

➜ 30 % of x = 270

➜ $\large{\frac{30}{100}}$ × X = 270

➜ 30 x = 27000

➜ X = $\large{\frac{27000}{30}}$

➜★ $\large{\boxed{X\:=\:900}}$★

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( iii ) 45 % of it is 810

➜ let the whole be x

➜ 45 % of 810

➜ $\large{\frac{45}{100}}$ × X = 810

➜ 45 x = 81000

➜ X = $\large{\frac{81000}{45}}$

➜★ $\large{\boxed{X\:=\:1800}}$★