Question

i have a total of 300 coins of denomination 1rs, 2rs ,and 5rs.the number of 2rs coins is 3 times the number of 5rs coins. the total number of coins is 160. how many coins of each denomination is with me​

Answer 1

Step-by-step explanation:

Let the number of Rs 5 coins be x.

Then , the number of Rs 2 coins = 3x

and , the number of rs 1 coin = 160-x-3x=160-4x

Total value of these coins = rs [ 5× x+2×3x+1×(160-4x) ] = rs ( 5x+6x+160-4x)=rs (7x+160)

According to question , 7x+160=30

7x=300-160 = 140

Dividing both sides by 7, we get

x = 140/7=20

Hence, number of rs 5 coins =x=20

Number of rs 2 coins = 3x= 3×20=60

Number of rs 1 coin = 160-4x =160-4×20=160-80=80