Question

Julia spends 5 min at the gym for every 3 min she spends running. How many minutes does she spend lifting weights?

1) 8 min
2) 10 min
3) 12 min
4) 15 min

Answer 1

Julia spends 20 minutes lifting weights.

Step-by-step explanation:

To find out how many minutes Julia spends lifting weights, let's set up a proportion with the given information. Since Julia spends 5 minutes at the gym for every 3 minutes she spends running, we can set up the proportion: 5 minutes / 3 minutes = x minutes / running time. Cross multiply and solve for x: 3x = 5 * running time. Simplifying the equation, we get x = 5 * running time / 3. Therefore, Julia spends 5 * running time / 3 minutes lifting weights.

Let's substitute the given answer choices:

1) 5 * 8 / 3 = 13.33 minutes

2) 5 * 10 / 3 = 16.67 minutes

3) 5 * 12 / 3 = 20 minutes

4) 5 * 15 / 3 = 25 minutes

Since we can't have fractional minutes, the closest answer choice is 20 minutes (option 3).