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What number is increased by 40% become 28?
a.5 b. 10 c. 15 d. 20​

2 Answers

6 votes

Answer:

d. 20

Explanation:

28 ÷ (100%+40%)

= 28 ÷ 140%

= 28 ÷ 1.4 = 20

User IGGt
by
7.9k points
2 votes

Answer:

option d

Explanation:

Let the number be x

40% of x = 0.40x

Increased by 40% = 28

That is ,

x + 0.40x = 28

1.40x = 28


x = (28)/(1.40)\\


x = (28 * 100)/(1.40 * 100 ) = (28 * 100)/(140) =(4 * 100)/(20) = 4 * 5 = 20

Therefore, the number is 20

User Manoj Behera
by
7.9k points

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