Mr Tan bought a laptop at a discount. If he sold the laptop at its usual price, he would gain a $550 profit. If he sold it at 80% of its usual price, he would lose $350 (receive $350 less than the amount he paid). How much did Mr Tan pay for the laptop?

1 Answer
Aug 6, 2018

Answer:

Mr Tan bought laptop for #$3950#

Explanation:

Let's assume , Mr Tan bought laptop for #$x# , then

usual price is #$ (x+550):. 80%# of the usual price

is # $(x+550)*0.8# ,which is #$(x-350)# , therefore,

# (x+550)*0.8=(x-350) or x -0.8 x = 550*0.8 +350# or

#0.2 x = 440+350 or 0.2 x = 790 or x = 790/0.2=$3950#

So, Mr Tan bought laptop for #$3950# [Ans]