Question

57.
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​

Answer 1

Answer:

Let us consider she has

x number of 5$ and

y number of 10$

then x+y=25

and 5x+10y=160

or, x+2y=35 (dividing both side with 5)

now,

• x+y=25
• x+2y=35
• ____________
• substract
• y-2y= -10
• -y= -10
• y=10

then x=25-y=25-10=15

x=15, y=10

thats mean, 15 coins fo 5$ and 10 coins of 10$