The table shows some information about Amir’s shopping.
| Fruit | Cost per kilogram | Number of kilograms Amir buys | Cost |
|---|---|---|---|
| Oranges | $2.35 | 3.2 | $…… |
| Bananas | $…… | 2.8 | $…… |
| Total | $13.54 | ||
Complete the table.
▶️ Answer/Explanation
Ans:
Oranges cost: 3.2 × $2.35 = $7.52
Bananas cost: $13.54 – $7.52 = $6.02
Bananas cost per kg: $6.02 ÷ 2.8 = $2.15
On the internet, Pranay sees a grey jacket for 165 euros (€) and a blue jacket for $180.
These are the exchange rates:
- €1 = 76.05 rupees
- 1 rupee = $0.0152
Work out which jacket is the cheapest and by how many rupees.
The ……………………. jacket is cheapest by ……………………. rupees
▶️ Answer/Explanation
Ans: The blue jacket is cheapest by 706 rupees.
Step 1: Convert the grey jacket’s price (€165) to rupees:
\(165 \text{ euros} \times 76.05 \text{ rupees/euro} = 12,548.25 \text{ rupees}\).
Step 2: Convert the blue jacket’s price ($180) to rupees. First, find the rupee-to-dollar rate:
Since \(1 \text{ rupee} = \$0.0152\), then \(\$1 = \frac{1}{0.0152} \approx 65.7895 \text{ rupees}\).
Now, convert $180 to rupees: \(180 \times 65.7895 \approx 11,842.11 \text{ rupees}\).
Step 3: Compare the two prices in rupees:
Grey jacket: 12,548.25 rupees, Blue jacket: 11,842.11 rupees.
Difference: \(12,548.25 – 11,842.11 = 706.14 \text{ rupees}\).
Thus, the blue jacket is cheaper by approximately 706 rupees.