PSLE Kylie and Nora each had a plate of dough of the same mass for making tarts. The same mass of dough was used for each tart. Kylie made 30 tarts and had 400 g of dough left. Nora made 12 tarts and had 1.03 kg of dough left.
- What was the mass of dough needed for each tart?
- With the remaining dough from both girls, how many more such tarts can be made at most?
(a)
Difference between the number of tarts made by Kylie and Nora
= 30 - 12
= 18
1 kg = 1000 g
1.03 kg = 1.03 x 1000 = 1030 g
Difference between the remaining dough left by Nora and Kylie
= 1030 - 400
= 630 g
Mass of 18 tarts = 630 g
Mass of 1 tart
= 630 ÷ 18
= 35 g
(b)
Total remaining dough left
= 1030 + 400
= 1430 g
Sets of 35 g
= 1430 ÷ 35
= 40 r 30
Number of tarts = 40
Answer(s): (a) 35 g; (b) 40