PSLE Gillian and Zoe each had a plate of dough of the same mass for making scones. The same mass of dough was used for each scone. Gillian made 46 scones and had 390 g of dough left. Zoe made 28 scones and had 1.02 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 Gillian and Zoe
= 46 - 28
= 18
1 kg = 1000 g
1.02 kg = 1.02 x 1000 = 1020 g
Difference between the remaining dough left by Zoe and Gillian
= 1020 - 390
= 630 g
Mass of 18 scones = 630 g
Mass of 1 scone
= 630 ÷ 18
= 35 g
(b)
Total remaining dough left
= 1020 + 390
= 1410 g
Sets of 35 g
= 1410 ÷ 35
= 40 r 10
Number of scones = 40
Answer(s): (a) 35 g; (b) 40