two bikes were sold for Rs 60000 each on one the shopkeeper gain Rs 10000 and on another bike loss was Rs 8000. Find his loss and gain in %.On each bike also Find his total loss or gain in %.

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Solution

Total selling price = 60000 $\times$ 2= Rs.1,20,000
Cost price of first bike = selling price - gain = 60000-10000=Rs. 50000
Cost price of second bike = selling price + loss =60000+8000=Rs.68000

(i) Gain% of first bike= $\frac{g a i n}{C P} \times 100 = \frac{10000}{50000} \times 100 = 20 %$

Loss% on second bike= $\frac{l o s s}{C P} \times 100 = \frac{8000}{68000} \times 100 = 11.76 %$

(ii) Total SP= 2(60000)=Rs 1,20,000
Total CP=50,000+68,000=1,18,000
Total Gain = Total selling price - Total cost price = 120000-118000= Rs.2,000
Total gain %= $\frac{g a i n}{\cos t p r i c e} \times 100 = \frac{2000}{118000} * 100 = 1.69 %$

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