Vishal has only rs.2 and rs.5 coins. they add up to 57 in number and are worth rs.150. how many rs.5 are coins does he have?
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1
12 coins
2x+5(57-x)=150
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Let the number Rs 5 coins be x
The number of Rs 2 coins = ( 57 - x)
Their worth is Rs 150:
5x + 2(57 - x) = 150
5x + 114 - 2x = 150
3x = 150 - 114
3x = 36
x = 12
Find the number of Rs 5 coins
Rs 5 coins = x = 12
Answer: There are 12 Rs 5 coins.
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