PSLE Lynn and Xandra each had a plate of dough of the same mass for making scones. The same mass of dough was used for each scone. Lynn made 34 scones and had 490 g of dough left. Xandra made 18 scones and had 1.13 kg of dough left.
- What was the mass of dough needed for each scone?
- With the remaining dough from both girls, how many more such scones can be made at most?
(a)
Difference between the number of scones made by Lynn and Xandra
= 34 - 18
= 16
1 kg = 1000 g
1.13 kg = 1.13 x 1000 = 1130 g
Difference between the remaining dough left by Xandra and Lynn
= 1130 - 490
= 640 g
Mass of 16 scones = 640 g
Mass of 1 scone
= 640 ÷ 16
= 40 g
(b)
Total remaining dough left
= 1130 + 490
= 1620 g
Sets of 40 g
= 1620 ÷ 40
= 40 r 20
Number of scones = 40
Answer(s): (a) 40 g; (b) 40