⁵₆ of Mark's savings comprised of 20-cent coins and 50-cent coins. Mark used some 20-cent coins to purchase a toy figurine. The number of 50-cent coins left was 40% more than the number of 20-cent coins left. Given that Mark had 22 more 50-cent coins than 20-cent coins left in the end, find the amount of money Mark spent on the toy figurine.

	20-cent coins	50-cent coins
Before	5x7 = 35 u	1x7 = 7 u
Change	- 30 u
After	5x1 = 5 u	7x1 = 7 u

Fraction of Mark's savings that comprised of 50-cent coins
= 1 - ⁵₆
= ¹₆

Number of 50-cents coins in the end in percentage
= 100% + 40%
= 140%

140% = ¹⁴⁰₁₀₀ = ⁷₅

Number of 50-cent coins remains unchanged. Make the number of 50-cent coins the same.  LCM of 1 and 7 is 7.

Number of more 50-cent coins than 20-cent coins
= 7 u - 5 u
= 2 u

2 u = 22

1 u = 22 ÷ 2 = 11

Number of 20-cent coins spent on the toy figurine 
= 35 u - 5 u
= 30 u
= 30 x 11
= 330

Amount that Mark spent on the toy figurine 
= 330 x 0.2
= $66

Answer(s): $66