PSLE
Diana and Natalie each had a plate of dough of the same mass for making muffins. The same mass of dough was used for each muffin. Diana made 43 muffins and had 495 g of dough left. Natalie made 27 muffins and had 1.055 kg of dough left.

1. What was the mass of dough needed for each muffin?
2. 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 Diana and Natalie
= 43 - 27
= 16

1 kg = 1000 g
1.055 kg = 1.055 x 1000 = 1055 g

Difference between the remaining dough left by Natalie and Diana
= 1055 - 495
= 560 g

Mass of 16 muffins = 560 g

Mass of 1 muffin
= 560 ÷ 16
= 35 g

(b)
Total remaining dough left
= 1055 + 495
= 1550 g

Sets of 35 g
= 1550 ÷ 35
= 44 r 10

Number of muffins = 44

Answer(s): (a) 35 g; (b) 44