PSLE Kathy and Natalie each had a plate of dough of the same mass for making tarts. The same mass of dough was used for each tart. Kathy made 42 tarts and had 330 g of dough left. Natalie made 22 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 Kathy and Natalie
= 42 - 22
= 20
1 kg = 1000 g
1.03 kg = 1.03 x 1000 = 1030 g
Difference between the remaining dough left by Natalie and Kathy
= 1030 - 330
= 700 g
Mass of 20 tarts = 700 g
Mass of 1 tart
= 700 ÷ 20
= 35 g
(b)
Total remaining dough left
= 1030 + 330
= 1360 g
Sets of 35 g
= 1360 ÷ 35
= 38 r 30
Number of tarts = 38
Answer(s): (a) 35 g; (b) 38