Question

My younger sister’s age today is 3 times, what it will be three years from now minus three times what her age was three years ago. Find her present age.
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Answer 1

Answer:

At present her age = 18 yrs

Step-by-step explanation:

Let at present his sister's age = x years

After 3 years:

Her age will be (x+3)

3 years ago:

Her age was (x-3)

According to the problem given,

x = 3times what it will be 3 years from now minus 3 times what her age was 3 years ago

=> x = 3(x+3)-3(x-3)

=> x = 3x+9-3x+9

=> x = 18

Therefore,

At present her age = x = 18 yrs

•••♪

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