Class R, S and T were given some lollipops to sell for their donation drive. The average number of lollipops the 3 classes had at first was 202. After Class S sold twice as many lollipops as Class R and Class T sold ³₄ as many lollipops as Class S, the average number of lollipops the 3 classes had left was 55. How many lollipops did Class R and Class T sell altogether?

Class R	Class S	Class T
1x2	2x2
	4x1	3x1
2 u	4 u	3 u

Class R : Class S : Class T
2 : 4 : 3

Total number of lollipops that the 3 classes had at first
= 3 x 202
= 606

Number of lollipops that the 3 classes left
= 3 x 55 
= 165

Number of lollipops that were sold by 3 classes
= 606 - 165
= 441

2 u + 4 u + 3 u = 441
9 u = 441

1 u = 441 ÷ 9 = 49

Total number of lollipops sold by Class R and Class T
= 2 u + 3 u
= 5 u
= 5 x 49
= 245

Answer(s): 245