Question

A sold his mobile phone to B at a profit of 10% where B sold it to C at a loss of 10%.If C paid 990 for ds mobile phn .Find how much has A purchased for it?

Answer 1

let B purchased mobile phone for x rupees
B sold it for x-x/10=990
9x/10=990
x=9900/9=1100
A purchase mobile phone for 1100×100/110
A purchase it for 1000 rupees

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