Question

which number is decreased by 10% become 3/8?​

Answer 1

Step-by-step explanation:

Let the Number be x

when x is decreased by 10%, it becomes 108

=> x - 10% of x = 108

=> x - (10/100)×x = 108

=> x(1 - 10/100) = 108

=> x(90/100) = 108

=> 90x = 108×100

=> x = 120

Therefore,

Number is 120

120 + y% of 120 = 144

=> y% of 120 = 144-120

=> (y/100)×120 = 24

=> y/10 = 2

=> y = 20%

Therefore,

the number 120 when increased by 20% gives 144

yhi hai Bhai

Answer 2

Answer :

We have,

• A number is decreased by 10% becomes $\dfrac{3}{8}$

Solution :

Let the number be x

According to question ,

• The number is decreased by 10%

Then,

• 90% of x = $\dfrac{3}{8}$

= $\dfrac{90}{100}$ × x = $\dfrac{3}{8}$

= x = $\dfrac{3}{8}$ × $\dfrac{100}{90}$

= x = $\cancel{\dfrac{30}{9}}$

= x = $\dfrac{10}{3}$

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