Let's solve each problem step by step.
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Problem 1:
> If 8 oranges cost $10.40, how many oranges can be bought for $33.80?
Step 1: Find the cost per orange.
→ $10.40 ÷ 8 = $1.30 per orange
Step 2: Divide total money by cost per orange.
→ $33.80 ÷ $1.30 = 26
✔ So,
26 oranges can be bought.
Answer: (d) 26
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Problem 2:
> If 18 dolls cost $630, how many dolls can be bought for $455?
Step 1: Find cost per doll.
→ $630 ÷ 18 = $35 per doll
Step 2: Divide total money by cost per doll.
→ $455 ÷ $35 = 13
✔ So,
13 dolls can be bought.
Answer: (c) 13
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Problem 3:
> If a man earns $805 per week, in how many days will he earn $1840?
Note: A week has 7 days.
Step 1: Find daily earnings.
→ $805 ÷ 7 = $115 per day
Step 2: Divide total earnings needed by daily earnings.
→ $1840 ÷ $115 = 16
✔ So, he will earn $1840 in
16 days.
Answer: (b) 16 days
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Problem 4:
> If car covers 102 km in 6.8 litres of petrol, how much distance will it cover in 24.2 litres of petrol?
This is a proportion problem.
Step 1: Find km per litre.
→ 102 km ÷ 6.8 L = 15 km/L
Step 2: Multiply by new amount of petrol.
→ 15 km/L × 24.2 L = 363 km
✔ So, the car will cover
363 km.
Answer: (a) 363 km
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Final Answers:
1.
d
2.
c
3.
b
4.
a
Write these lowercase letters in the boxes as instructed.
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Parent Tip: Review the logic above to help your child master the concept of direct proportion worksheet.
