Question

yun UI IUSS per cent. 7. Mr. Tandon purchased a computer for 7 32,000 and a microwave oven for 3 6,500. On computer he lost 5% and on microwave he gained 15%. Find his total gain or loss per cent.​

Answer 1

Step-by-step explanation:

CP of computer = Rs.32000, Loss % on computer = 5%.

CP of microwave = Rs. 6500, Gain % on microwave = 15%.

Now, to find the selling price (SP) of a computer, we use the formula SP=100−l%100×CP , since there is a loss.

Putting the value of CP of computer, loss % in the above formula we have-

SP=100−5100×32000=95100×32000=30400

Now, to find the selling price (SP) of a microwave, we use the formula SP=100+P%100×CP , since there is a profit.

Putting the value of CP of computer, profit % in the above formula we have-

SP=100+15100×6500=115100×6500=7475

Now, the total CP is = CP of computer + CP of microwave

=32000+6500=38500

Now, also the total SP = SP of computer + SP of microwave

=30400+7475=37875

Now since the total CP > total SP, so there is a loss

Loss = CP – SP = 38500 – 37875 = Rs. 625

So, the loss % will be lCP×100% , where l is the loss and CP is the Cost Price.

Putting the values of loss and CP we have-

Loss % =62538500×100=12577=1.62%

The loss is 1.62%, so none of the above options are correct.