PSLE Opal and Tina each had a plate of dough of the same mass for making tarts. The same mass of dough was used for each tart. Opal made 41 tarts and had 465 g of dough left. Tina made 25 tarts and had 1.025 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 Opal and Tina
= 41 - 25
= 16
1 kg = 1000 g
1.025 kg = 1.025 x 1000 = 1025 g
Difference between the remaining dough left by Tina and Opal
= 1025 - 465
= 560 g
Mass of 16 tarts = 560 g
Mass of 1 tart
= 560 ÷ 16
= 35 g
(b)
Total remaining dough left
= 1025 + 465
= 1490 g
Sets of 35 g
= 1490 ÷ 35
= 42 r 20
Number of tarts = 42
Answer(s): (a) 35 g; (b) 42