Answer:

SP = [100/100-loss%]CP

880=[100/100-20]CP

704=CP

now profit% is given, hence

p%= (sp-cp) *100/cp

10=(sp-704)*100/704

704=10sp-7040

7744=10sp

774.4=sp

therefore the cycle should be sold at Rs. 774.4 to gain 10% profit.

shortcut

when the cost price is found that is 704 just directly take out the 10% of it and add it to the cost price which is,

704*10/100=70.4

hence

704+70.4= 774.4

Answer:

990 is the right answer here