I will solve the problems step by step.
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Problem 1a:
A father brings £55. He spends 3/5 on tickets.
Step 1: Find 1/5 of £55 → 55 ÷ 5 = 11
Step 2: Multiply by 3 → 11 × 3 = 33
✔ He spent
£33 on tickets.
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Problem 1b:
He spends £15 on snacks. What fraction of the money was spent on snacks?
Total money = £55
Spent on snacks = £15
Fraction = 15/55
Simplify: divide numerator and denominator by 5 → 3/11
✔ The fraction is
3/11.
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Problem 1c:
His wife wanted him to bring 2/11 more to the cinema. How much did his wife want him to bring?
This means: add 2/11 of the original amount (£55) to the original amount.
Step 1: Find 2/11 of £55 → (55 ÷ 11) × 2 = 5 × 2 = 10
Step 2: Add to original → 55 + 10 = 65
✔ His wife wanted him to bring
£65.
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Problem 2a:
Perimeter of USB port (rectangle): length = 9/10 cm, width = 3/4 cm
Perimeter = 2 × (length + width)
Step 1: Add length and width → 9/10 + 3/4
Find common denominator: 20
→ 9/10 = 18/20, 3/4 = 15/20
Sum = 18/20 + 15/20 = 33/20
Step 2: Multiply by 2 → 2 × 33/20 = 66/20
Step 3: Simplify → 66 ÷ 2 = 33, 20 ÷ 2 = 10 → 33/10
Convert to mixed fraction: 33 ÷ 10 = 3 with remainder 3 → 3 3/10
✔ Perimeter =
3 3/10 cm
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Problem 2b:
Shaded area = outer rectangle minus inner rectangle
Outer rectangle: 9/10 cm × 3/4 cm
Inner rectangle: 1/2 cm × 1/3 cm
Step 1: Outer area = 9/10 × 3/4 = (9×3)/(10×4) = 27/40
Step 2: Inner area = 1/2 × 1/3 = 1/6
Step 3: Subtract → 27/40 - 1/6
Common denominator of 40 and 6 is 120
27/40 = (27×3)/120 = 81/120
1/6 = (1×20)/120 = 20/120
Subtract: 81/120 - 20/120 = 61/120
✔ Shaded area =
61/120 cm²
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Problem 3a (Section B):
1/3 of life is spent asleep. If someone lives 72 years, how much is spent asleep?
Step 1: 1/3 of 72 = 72 ÷ 3 = 24
✔ 24 years
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Problem 3b:
Baby sleeps:
- First month: 15 hours/day
- Next two months: 16 hours/day
Total time: 3 months = 3 × 4 weeks = 12 weeks = 84 days (since 1 week = 7 days → 12 × 7 = 84)
But let’s calculate total sleep hours and total possible hours.
First month: 30 days? Wait — problem says “1 month is equivalent to 4 weeks” → so 1 month = 28 days.
So:
- Month 1: 28 days × 15 hours = 420 hours
- Months 2 & 3: 2 × 28 = 56 days × 16 hours = 896 hours
Total sleep hours = 420 + 896 = 1316 hours
Total hours in 3 months: 3 × 28 days × 24 hours = 84 × 24 = 2016 hours
Fraction asleep = 1316 / 2016
Simplify:
Divide numerator and denominator by 4:
1316 ÷ 4 = 329
2016 ÷ 4 = 504
Check if 329 and 504 have common factors.
329 ÷ 7 = 47 → 7×47=329
504 ÷ 7 = 72 → 7×72=504
So 329/504 = 47/72
✔ Fraction =
47/72
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Problem 3c:
Julian gets 2/7 less sleep than recommended 8 hours/day.
How much sleep does he lose each week?
Step 1: Daily loss = 2/7 of 8 hours = (2×8)/7 = 16/7 hours per day
Step 2: Weekly loss = 7 days × 16/7 = 16 hours
✔ He loses
16 hours per week.
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Final Answer:
1a. £33
1b. 3/11
1c. £65
2a. 3 3/10 cm
2b. 61/120 cm²
3a. 24 years
3b. 47/72
3c. 16 hours
Parent Tip: Review the logic above to help your child master the concept of fraction problems worksheet.