The figures show 3 different fruits, a banana, a pear and 2 similar pineapples. The mass of the banana is ²₅ of the mass of the pineapple.

1. Find the mass of the banana.
2. Find the mass of the pear.

(a)
Mass of the banana = 2 u
Mass of the pineapple = 5 u

(Weighing scale on the right)
10 intervals → 1000 g
1 interval →  1000 ÷ 10 = 100 g

Mass of 2 pineapples
= 1000 + 8 x 100
= 1000 + 800
= 1800 g

Mass of 1 pineapple
= 1800 ÷ 2
= 900 g

(Weighing scale on the left)
1 kg = 1000 g
2 kg = 2000 g

10 intervals → 1 kg = 1000 g
1 interval → 1000 ÷ 10 = 100 g

Mass of the banana and the pear
= 1000 + 2 x 100
= 1000 + 200
= 1200 g

5 u = 900

1 u = 900 ÷ 5 = 180

Mass of the banana
= 2 u
= 2 x 180
= 360 g

(b)
Mass of the pear
= 1200 - 360
= 840 g

Answer(s): (a) 360 g; (b) 840 g