Question

Rahul has 260 coins of rs 1,rs 2 ,rs 5 altogether. The total value of the money is rs309. The number of rs2 coins is three times the number of rs5 coin. Find the number of coins of each type​

Answer 1

Answer:

.coin of 5 = 20 coins

coin of 2 = 60 coins

coin of 1 = 80 coins

Step-by-step explanation:

Let the number of coin 5 = Rs.x

so the number of coin 2 = 3x

so the number of coin 1 = 160 - 4x

so amount of rs.5 = 5x

so the amount of rs.2 = 6x

a/q

5x + 6x + 160 - 4x = 300

7x = 300 - 160

7x = 140

x = 20

so the number of coin of 5 = 20 coins

so the number of coin of 2 = 60 coins

so the number of coin of 1 = 80 coins

Answer 2

Step-by-step explanation:

Total coins = 260

Rs5 coins=x

Rs 2 coins= 3x

Rs 1 coins= y

• x+3x+y=260
• y=260-4x (1)

By question

x*5+3x*2+y*1=309

5x+6x+1y=309

• y=309-11x (2)

From 2 and 1

309-11x=260-4x

7x=49

x=7.

Now,

No. of 5's coins=49

2's coins=3*49=147

1's coins is

y=260-4x

=260-4*49

=64