PSLE Wendy and Min each had a plate of dough of the same mass for making croissants. The same mass of dough was used for each croissant. Wendy made 34 croissants and had 470 g of dough left. Min made 14 croissants and had 1.37 kg of dough left.
- What was the mass of dough needed for each croissant?
- 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 Wendy and Min
= 34 - 14
= 20
1 kg = 1000 g
1.37 kg = 1.37 x 1000 = 1370 g
Difference between the remaining dough left by Min and Wendy
= 1370 - 470
= 900 g
Mass of 20 croissants = 900 g
Mass of 1 croissant
= 900 ÷ 20
= 45 g
(b)
Total remaining dough left
= 1370 + 470
= 1840 g
Sets of 45 g
= 1840 ÷ 45
= 40 r 40
Number of croissants = 40
Answer(s): (a) 45 g; (b) 40