The figures show 3 different fruits, a banana, a pear and 2 similar pineapples. The mass of the banana is
45 of the mass of the pineapple.
- Find the mass of the banana.
- Find the mass of the pear.
(a)
Mass of the banana = 4 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
= 4 u
= 4 x 180
= 720 g
(b)
Mass of the pear
= 1200 - 720
= 480 g
Answer(s): (a) 720 g; (b) 480 g