Heena has only rs 2 and rs 5 coins,in her purse. if in all she has 80 coins in her purse amounting to rs 232. find the number of rs 5 coin.

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Is this a maths school problem?
You need to use algebra -
2x + 5y = 232 (heena has a number of 2 and 5 coins in her purse which add up to 232)
x + y = 80 (heena has x number of 2 and y number of 5 coins which tally to 80)
therefore, x = 80 - y
so going back to first equation, 2(80 - y) + 5y = 232
160 - 2y + 5y = 232
3y = 72
y = 24
and going back to x, x = 80 - y
x = 80 - 24
x = 56
so heena has 56 rs 2, and 24 rs 5. So the answer is 24.