Question

How many coins each? The ratio of the number of ₹2, ₹5 and 10 coins is 4:2:1 Total amount = 140

please answer correct​

Answer 1

Step-by-step explanation:

Let us assume,

• The number of ₹10 coins be x,
• The number of ₹5 coins should be 2x,

And

• The number of ₹2 coins should be 4x.

As given,

• The total amount of coins is ₹140.

We know that,

• Value of coin × No. of coins = Total amount

We can say that,

• ₹10(x) + ₹5(2x) + ₹2(4x) = ₹140

Finding The value of x,

• ➠ 10x + 10x + 8x = 140
• ➠ 28x = 140
• ➠ x = 140/28
• ➠ x = 5

We found,

• The value of x is 5.

As we assumed,

• The number of ₹10 coins be x,
• The number of ₹5 coins should be 2x,

And

• The number of ₹2 coins should be 4x.

Therefore,

• The number of ₹10 coins is 5.
• The number of ₹5 coins is 10.

And,

• The number of ₹2 coins is 20.

Finalized Answer:

• The number of coins of ₹2, ₹5 and ₹10 are 20, 10 and 5 respectively.