Question

I had a total of Rs 150 in coins of denomination Re 1, Rs 2 and Rs 5. The number of
Rs 2 coins was 3 times the number of Rs 5 coins. The total number of coins was 80.
I gave all the 5 rupee coins to my friend. I bought 6 apples and gave all the 2 rupee
coins to the shopkeeper.
i). I the number of Rs.5 coins was x, then the number of Rs.2 coins was ------
a) 80 - 3x
b) 3x
c) 80
d) 80-X​

Answer 1

Let number of Rs5 coins be x

Number of Rs 2 coins =3× Number of 5 Rs coins =3x

Number of Re1 coins =160−(x+3x)

=160−4x

Amount of Rs5 coins =5×x=5x

Amount of Rs2 coins =2×3x=Rs6x

Amount of Re1 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 Re 1 coins =160−4x

=160−4×20

=80

Number of Rs2 coins =3x=3×20=60

Number of Rs5 coins =x=20

HOPE YOU CAN LEARN FROM THIS