Question

a man sold two watches at rupees 240 each, on one he gained 7% and on the other he lost 7% find the gain or loss in the transaction

Answer 1

cp=240*100/100+7
cp=24000/107
cp=224.29
gain=240-224.29=15.71

cp=240*100/100-7
cp=24000/93
cp=258.06
loss=258.06-240=18.06

Answer 2

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QUESTION :

A man sold two watches at rupees 240 each, on one he gained 7% and on the other he lost 7% find the gain or loss in the transaction.

SOLUTION :

(I). The cost price of first watch, that he gained 7 %

=> we know the formula

©p = SP × 100/100 + profit.

©p = 240 × 100/100 + 7

©p = 24000/107

©p = 224.30

(ii). The cost price of another watch , that he lost 7%

=> ©p = SP × 100 /100-7

=> ©p = 240 × 100/93

=> ©p = 24000/93

=> ©p = 258.06

then , GAINED.

=> SP - ©p = 240-224.30

=>GAINED = 15.7

=> NOW, LOST

=> SP - ©p = 240-258.06

=> LOSS= 18.6