Question

Number when increased by 40% becomes 42 what is the number

Answer 1

Answer:

30

Step-by-step explanation:

let no be x

40℅ of the no

x×40/100

x×2/5

according to question

x+2x/5=42

7x/5=42

7x=42×5

x=42×5/7

x=30

Answer 2

Answer:

30

Step-by-step explanation:

$let \: the \: number \: be \: x \\ given \: condition \\ x + 40\%of x = 42 \\ x + \frac{40}{100} x = 42 \\ x(1 + \frac{2}{5} ) = 42 \\ \frac{7}{5} x = 42 \\ x = 42 \times \frac{5}{7} \\ x = 30$

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