a boy has coins in denomination of rs 1 and rs 2. he has total 30 coins and the value of coins is rs 48 find the no of coins he has?
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Step-by-step explanation:
Ratio of the coins : 1:2:3
Let no. of 50 paise coins =x
Value of 50 paise coins =
2
x
=Rs.
2
x
No. of 25 paise coins =2x
Value of 25 paise coins =
4
2x
=Rs.
2
x
No. of 10 paise coins =3x
Value of 10 paise coins =
10
3x
=Rs.
10
3x
Total value of the coins = Rs.6.50
(
2
x
)+(
2
x
)+(
10
3x
)=6.50
⇒
10
(5x+5x+3x)
=6.50
⇒13x=65
⇒x=5
Then no. of 10 paise coins =3x=3×5=15
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