Question

Shipra had 36 coins in her piggy bank.it contains some 35 paisa coins some 10 paisa coins and some 5 paisa coins.The total amount of money was Rd 3 how many of each coins does she have

Answer 1

If no.of 35p = x.
Then no.of 10p = 36 - x.
35(x) + 5( 36 - x) = 3 × 100.
35x + 180 -5x = 300.
30x = 120
x = 4
Hence, 4 35p coins and 32 10p coins. Hope it helps ☺

Answer 2

$35x + 10x + 5x = 300 \\ 50x = 300 \\ x = 300 \div 50 = 6 \\ 35 \times 6 = 210 \\ 10 \times 6 = 60 \\ 5 \times 6 = 30 \\ \\ 210 \: coins \: of \: 35 \: paisa \\ 60 \: coins \: of \: 10 \: paisa \\ 30 \: coins \: of \: 5 \: paisa$