The number of five-cent coins in a pouch was ¹₄ the number of ten-cent coins. George took out 16 ten-cent coins and exchanged them for five-cent coins. Then he put the money back into the pouch. The number of ten-cent coins became ²₅ the number of five-cent coins. How much money was there in the pouch?

	Make u the same (1)x4 = (3)	5-cent (1)	10-cent (2)
Before	4 u	1 u	4 u
Change	+ 128	+ 32	- 16
After	20 p	5 p	2 p

Value of 10-cent coins to be exchanged to 5-cent coins
= 16 x 10
= 160

Number of 5-cent coins to be exchanged from the 10-cent coins
= 160 ÷ 5
= 32

(3) = (2)
20 p - 128 = 2 p + 16
20 p - 2 p = 16 + 128
18 p = 144

1 p = 144 ÷ 18 = 8

Number of 5-cent coins in the end
= 5 p
= 5 p x 8
= 40

Value of 5-cent coins in the end
= 40 x 5
= 200¢

Number of 10-cent coins in the end
= 2 p
= 2 x 8
= 16

Value of 10-cent coins in the end
= 16 x 10
= 160¢

Total value of coins
= 200 + 160
= 360¢

$1 = 100¢
360¢ = $3.60 

Answer(s): $3.60