Mangal thinks a number. Multiplying the result by subtracting 5 from it. The result now obtained is three times the number thought of. Find the number that is thought of.
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Let the number be X.
So equation after first sentence will be
Result = X-5/2
After second sentence equation wil be
= 8X-8*(5/2)
= 8X-40
So finally the result is 3 times of the number which she thought
Therefore,
3X=8X-40
40=8X-3X
40=5X
X=40/5
X=8
SO the number is 8.
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