PSLE
Julie and Shannon each had a plate of dough of the same mass for making croissants. The same mass of dough was used for each croissant. Julie made 34 croissants and had 220 g of dough left. Shannon made 14 croissants and had 1.12 kg of dough left.

1. What was the mass of dough needed for each croissant?
2. With the remaining dough from both girls, how many more such croissants can be made at most? 

(a)
Difference between the number of croissants made by Julie and Shannon
= 34 - 14
= 20

1 kg = 1000 g
1.12 kg = 1.12 x 1000 = 1120 g

Difference between the remaining dough left by Shannon and Julie
= 1120 - 220
= 900 g

Mass of 20 croissants = 900 g

Mass of 1 croissant
= 900 ÷ 20
= 45 g

(b)
Total remaining dough left
= 1120 + 220
= 1340 g

Sets of 45 g
= 1340 ÷ 45
= 29 r 35

Number of croissants = 29

Answer(s): (a) 45 g; (b) 29