Question

Ayesha has only 5 and 10 coins
with her. If the total number of coins
she has is 25 and the amount of money
with her is * 160, then the number of
5 and 10 coins with her are
(1) 18 and 7 respectively
(2) 10 and 15 respectively
(3) 15 and 10 respectively
(4) 20 and 5 respectively​

Answer 1

Answer:

(a) 18 and 7 respectively

Step-by-step explanation:

Answer 2

There are 18- 5 coins and 7- 10 coins.

Step-by-step explanation:

Since we have given that

Let the number of 5 coins be 'x'.

Let the number of 10 coins be '25-x'.

Amount earned by 5 coins = $5x$

Amount earned by 10 coins = $10(25-x)=250-10x$

Total amount of money = Rs. 160

According to question, we get that

$5x+250-10x=160\\\\-5x=160-250\\\\-5x=-90\\\\x=\dfrac{90}{5}=18$

Hence, there are 18- 5 coins and 7- 10 coins.

Therefore, Option (1) is correct.

# learn more:

Katha has coins in the denominations of rs.2, rs.5, and rs.10. The number of rs.2 coins is three times the number of rs.5 coins and total number of coins is 160.If the total amount of the coins is rs.730, howmany coins of each denomination does Katha have?

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