i have a total of Rs 300 in coins of denomination Rs1,Rs2,Rs5.the no of Rs 2 is 3 times the no of Rs 5 coins. the total no of coins is 160. how many coins of each denomination are with me.please ans
Answers
Answer:
Let number of Rs5 coins be x
Number of Rs 2 coins =3× Number of 5 Rs coins =3x
Number of Rs1 coins =160−(x+3x)
=160−4x
Amount of Rs5 coins =5×x=5x
Amount of Rs2 coins =2×3x=Rs6x
Amount of Rs1 coins =(160−4×x)
=160−4x
As per the question, Total amount =Rs300
160−4x+5x+6x=300
7x=300−160
x= 7/140
x=20
Number of Rs 1 coins =160−4x
=160−4×20=80
Number of Rs2 coins =3x=3×20=60
Number of Rs5 coins =x=20
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Answer:
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Step-by-step explanation:
15: Let the number of Rs 5 coins be x
Number of Rs 2 coins = 3 × Number of Rs 5 coins = 3x
Number of Re 1 coins = 160 − (Number of coins of Rs 5 and of Rs 2)
= 160 − (3x + x) = 160 − 4x
Amount of Re 1 coins = Rs [1 × (160 − 4x)] = Rs (160 − 4x)
Amount of Rs 2 coins = Rs (2 × 3x) = Rs 6x
Amount of Rs 5 coins = Rs (5 × x) = Rs 5x
It is given that the total amount is Rs 300.
∴ 160 − 4x + 6x + 5x = 300
160 + 7x = 300
7x = 300 - 160
7x = 140
7x =
x = 20
Number of Re 1 coins = 160 − 4x
= 160 − 4 × 20
= 160 − 80 = 80
Number of Rs 2 coins = 3x
= 3 × 20 = 60
Number of Rs 5 coins = x
= 20