Question

Sravya bought a watch for 480 rupees . She sold it to Ridhi at a gain of 61/4% . Ridhi sold it to Divya at a gain of 10% . How much did Divya pay for it ?

Answer 1

Cost price of watch (for Sravya) = Rs 480

Gain = $\mathit{6\frac{1}{4}}$ %

Gain = 25/4%

selling price = CP(100 + gain)/100

= 480 * (100 + 25/4)/100

= 480 * (425)/100

= 510

SP of watch is Rs 510

That is cost price of watch (for Ridhi)

= Rs 510

Gain = 10%

Sp = 510 * (100 + 10)/100

SP = 510* (110)/100

SP = 561

SP of watch (to Divya) is Rs 561
Hence Divya has to pay Rs 561 to purchase the watch.


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