There were some fruits in a warehouse. 3/7 of them were apples and the rest were oranges. After throwing away 27 apples and ¼ of the oranges that were rotten, there were 3/5 of the fruits left. (a) How many fruits were thrown away? (b) How many apples were there at first? [5 marks][42, 45]
3 : 4 = 15 : 20
3/5 x 35 = 21
3/4 x 20 = 15
21 - 15 = 6
A O
--------------
15 u 20 u
- 27 - 5 u
---------------
6 u 15 u
---------------
9 u --> 27
1 u --> 27/9 = 3
5 u --> 5 x 3 = 15
15 + 27 = 42 fruits
a) 42 fruits were thrown away.
15 u --> 15 x 3 = 45 apples
b) It was 45 apples.
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