Sunita has 10 paise and 50 paise coins in her purse. If the total number of coins is 17 and their total values is ₹4.50, then the number of 10 paise and 50 paise coins in her purse is *
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Step-by-step explanation:
total number of coins is 17
let number of 10 paise coins = a
then number of 50 paise coins = 17-a
given,
a×10 + (17-a)×50 = 450
→ 10a + 850 -50a = 450
→ 40a = 400
→ a = 400/40 = 10
number of 10 paise coins = a = 10
and number of 50 paise coins = 17-a= 17-10 = 7
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Answer:
HERE IS YOUR ANSWER......
Step-by-step explanation:
let no. of 50paise coins be x
∵total no. of coins = 17
∴no. of 10paise coins =17-x
total value =Rs4.50=450paise
value of 50paise coins =50 × x= 50x
value of 10paise coins =10 ×(17 - x)=170 - 10x
∴50x + 170 - 10x =450
⇒40x + 170 =450
⇒40x =450-170
⇒40x =280
⇒x =280/40
⇒x =7
∴number of 50paise coins =x =7
∴number of 10paise coins =17 - x =17 - 7 =10
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