Bhavesh had a certain amount with him He spent 20 of that to buy a new cell phone and 15 of the rema...........

Quantitative Aptitude (CDS) Percentage

Bhavesh had a certain amount with him. He spent 20% of that to buy a new cell phone and 15% of the remaining on buying a laptop. Then he donated Rs. 160 in a temple. If he is left with Rs. 1,200, how much did he buy the laptop for?

Rs. 520

Rs. 240

Rs. 420

Rs. 950

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Explanation:

Let bhavesh had total amount = Rs. x.
Then, Money spent on buying the cellphone = 20% of x = (20/100) * x = Rs. x/5
Now, remaining amount = x - (x/5) = 4x/5

Money spent on buying the laptop = 15% of (4x/5)
= (15/100) * (4x/5)
= Rs. 3x/25
Then, he donated Rs. 160 in a temple and left with Rs. 1200.

Therefore, Total amount he had = Money spent on buying the cellphone + Money spent on buying the laptop + Money donated in a temple + Money left with him
x = (x/5) + (3x/25) + 160 + 1200

x - (x/5) - (3x/25) = 1360
(25x - 5x - 3x)/25 = 1360
17x = 1360 * 25
x = (1360/17) * 25
x = 80 * 25
x = 2000
Thus, Total amount Bhavesh had = Rs. 2000
Now, the amount he buy the laptop for = Rs. 3x/25
= (3 * 2000)/25
= 3 * 80
= Rs. 240