Karen buys  4/5  kg of melon in a supermarket, and it costs $20. If Martin buys 7/10 kg same supermarket, how much should he pay?

To find out how much Martin should pay, we can use a proportion based on the price per kilogram of the melon.

### Step 1: Calculate the price per kilogram
Karen buys $ \frac{4}{5} $ kg of melon for $20.

The price per kilogram is:
\[
\text{Price per kg} = \frac{20}{\frac{4}{5}} = 20 \times \frac{5}{4} = 25 \, \text{dollars per kilogram}
\]

### Step 2: Calculate how much Martin should pay
Martin buys $ \frac{7}{10} $ kg of melon. 

To find out how much he should pay, multiply the amount of melon by the price per kilogram:
\[
\text{Amount Martin pays} = \frac{7}{10} \times 25 = 17.5 \, \text{dollars}
\]

So, Martin should pay **$17.50**.

Would you like further details or have any questions?

Here are some related questions:
1. How would the result change if Karen bought 1 kg of melon instead of $ \frac{4}{5} $?
2. What would Martin pay if the price per kilogram increased by 10%?
3. If Karen and Martin combine their purchases, how much melon do they have together?
4. How much would Karen have paid if she bought $ \frac{7}{10} $ kg like Martin?
5. If another person buys 2 kg of melon, what would the total cost be?

**Tip**: When working with ratios, unit rates (like price per kilogram) help you easily calculate for different quantities.

Karen buys 4/5 kg of melon in a supermarket, and it costs $20. If Martin buys 7/10 kg in the same supermarket, how much should he pay?

Find out how to calculate how much Martin should pay when he buys 7/10 kg of melon at the same supermarket where Karen buys 4/5 kg for $20. Learn about proportions, price per kilogram, and multiplication of fractions. Suitable for students in Grades 6-8.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation