Albert had 60% fewer mochi balls than Wesley. After Wesley gave 180 mochi balls to Albert, Albert had ⁴₅ as many mochi balls as Wesley. How many mochi balls did each of them have in the end?

1. Wesley
2. Albert

	Albert	Wesley	Total
Before	2x9 = 18 u	5x9 = 45 u	7x9 = 63 u
Change	+ 180	- 180
After	4x7 = 28 u	5x7 =  35 u	9x7 = 63 u

Number of mochi balls that Albert had at first in percentage
= 100% - 60%
= 40%

40% = ⁴⁰₁₀₀ = ²₅

The total number of mochi balls at first and in the end remains unchanged. Make the total number of mochi balls the same. LCM of 9 and 7 is 63.

Number of mochi balls that Wesley gave to Albert
= 45 u - 35 u
= 10 u

10 u = 180

1 u = 180 ÷ 10 = 18

Number of mochi balls that Albert had in the end
= 28 u
= 28 x 18
= 504

Number of mochi balls that Wesley had in the end
= 35 u
= 35 x 18
= 630

Answer(s): (a) 504; (b) 630