PSLE
Sarah and Marion made some banana croissants and cranberry croissants. Sarah made 79 more banana croissants than cranberry croissants. Marion made 199 more cranberry croissants than banana croissants. The total number of banana croissants made up 35% of the total number of croissants they made. How many banana croissants did they make altogether?

Number of cranberry croissants		Number of banana croissants
65%		35%
Sarah	Marion	Sarah	Marion
1 u	1 p + 199	1 u + 79	1 p

Sarah
Number of cranberry croissants = 1 u
Number of banana croissants = 1 u + 79

Marion
Number of banana croissants = 1 p
Number of cranberry croissants = 1 p + 199

Number of cranberry croissants in percent
= 100% - 35%
= 65%

1 u + 79 + 1 p = 35% --- (1)
1 u + 1 p + 199 = 65% --- (2)

(2) - (1)
65% - 35% = 199 - 79
30% = 120

1% = 120 ÷ 30 = 4

Number of banana croissants that they made altogether
= 35%
= 35 x 4
= 140

Answer(s): 140