A sells a cycle to B at a profit of 5% and B sells it to C at a profit of 10%. If C pays ₹2310 for it, the cost price of A is:

₹2000

C.P of B = C.P. of A × \(\frac{21}{20}\)

C.P of C = C.P. of A × \(\frac{21}{20}\) × \(\frac{11}{10}\) 

2310 = C.P. of A × \(\frac{21}{20}\) × \(\frac{11}{10}\)

C.P. of A = 2310 ×\(\frac{20}{21}\) × \(\frac{10}{11}\)

 C.P. of A = 2000/-