Page 90 - Start Up Mathematics_5

1
Solution: Fraction of racing games =
2
2
Car racing games out of these =
5
2 1
Fraction of car racing games = of
5 2
1
2 1 2 × 1 1 × 1 1
= × = = =
5 2 5 × 2 5 × 1 5
1 1
So, of all games are car racing games.
5
2
Example 20: A carpenter used of a can of paint to paint 2 tables. He used the same amount
5
of paint for each table. How many cans of paint did he use for each table?

2
Solution: Number of cans used to paint 2 tables =
5
2
2
Number of cans used to paint 1 table = ÷ 2 = ÷ 2
5 5 1
1
2 1 2 × 1 1 × 1 1
= × = = =
5 2 5 × 2 5 × 1 5
1 1
So, of a can was used to paint each table.
5

EXERCISE 5.4

1 1
1. In Varun’s music class, of the students play instruments. Out of these, play string
2 2
instruments. What fraction of students play string instruments?
2
2. Last week, Tanu spent 4 hours doing her homework. Shreya spent 2 times as many
3
hours doing her homework as Tanu did. How many hours did Shreya spend on doing

her homework?
1
3. Each cement block weighs 2 kg. How much do 5 such cement blocks weigh?
5
1
4. A biscuit factory used of a barrel of oatmeal in each batch of cookies. If the factory
4
1
used of a barrel of oatmeal one day, how many batches of cookies did factory make?
2
1
5. At the end of the night, a bakery had of a cake left. Two employees of the bakery
4
took home equal amount of the leftover cake. How much cake did each employee
take home?
3 1
6. Rahul walked 5 km in 2 hours. How much distance did Rahul walk in 1 hour?
4 2
1
7. If Honey bought 3 kg of apples for ` 280, then what is the cost of 1 kg apples?
2

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