Answer:
SP of 1 bike is equal to 35000 And the another bike SP is also equal to 35000.
15% of 35000 is equal to 5250
20% of 35000 is equal to 7000.
5250 + 7000 is equal to 12250 and 5000 + 35000 is equal to 70000 because he buy two bikes.
show the percentage of profit is equal to
12250 divided by 70000 X hundred is equal to 17.5%.
so, he had profit in all.