Final answer:
To work out the amount of money Ahmed receives, divide the amount received by Khalid by the ratio for Khalid, and then multiply that value by the ratio for Ahmed.
Step-by-step explanation:
To work out the amount of money Ahmed receives, we need to use the ratio between Khalid and Ahmed which is 5:7. Since Khalid receives $240, we can use that information to find the amount that Ahmed receives.
First, we calculate the value of one part of the ratio by dividing the total amount received by Khalid ($240) by the ratio for Khalid (5). This gives us $48.
Next, we multiply the value of one part of the ratio by the ratio for Ahmed (7) to find the amount that Ahmed receives. Therefore, Ahmed receives $48 * 7 = $336.