PSLE Betty and Zara each had a plate of dough of the same mass for making muffins. The same mass of dough was used for each muffin. Betty made 37 muffins and had 405 g of dough left. Zara made 17 muffins and had 1.105 kg of dough left.
- What was the mass of dough needed for each muffin?
- With the remaining dough from both girls, how many more such muffins can be made at most?
(a)
Difference between the number of muffins made by Betty and Zara
= 37 - 17
= 20
1 kg = 1000 g
1.105 kg = 1.105 x 1000 = 1105 g
Difference between the remaining dough left by Zara and Betty
= 1105 - 405
= 700 g
Mass of 20 muffins = 700 g
Mass of 1 muffin
= 700 ÷ 20
= 35 g
(b)
Total remaining dough left
= 1105 + 405
= 1510 g
Sets of 35 g
= 1510 ÷ 35
= 43 r 5
Number of muffins = 43
Answer(s): (a) 35 g; (b) 43