PSLE
Xylia and Fanny each had a plate of dough of the same mass for making sandwiches. The same mass of dough was used for each sandwich. Xylia made 32 sandwiches and had 430 g of dough left. Fanny made 14 sandwiches and had 1.06 kg of dough left.

1. What was the mass of dough needed for each sandwich?
2. With the remaining dough from both girls, how many more such sandwiches can be made at most? 

(a)
Difference between the number of sandwiches made by Xylia and Fanny
= 32 - 14
= 18

1 kg = 1000 g
1.06 kg = 1.06 x 1000 = 1060 g

Difference between the remaining dough left by Fanny and Xylia
= 1060 - 430
= 630 g

Mass of 18 sandwiches = 630 g

Mass of 1 sandwich
= 630 ÷ 18
= 35 g

(b)
Total remaining dough left
= 1060 + 430
= 1490 g

Sets of 35 g
= 1490 ÷ 35
= 42 r 20

Number of sandwiches = 42

Answer(s): (a) 35 g; (b) 42