Simon bought 2 pounds of cucumbers, 8 ounces of alfalfa sprouts, 3 pounds of lettuce, and 15 ounces of tomatoes. How many ounces of vegetables did he buy in total?

Answer=103 ounces

First we need a conversion equations to get from pounds to ounces

1pound=16ounce

2pounds=2*16=32 ounces of cucumber

3pounds=3*16=48 ounces of lettuce

Now that all of the vegetables are in ounces, we can solve for their total weight.

x=32+8+48+15=103 ounces

He bought 103 ounces of vegetables in total.

If you would like to know how many ounces of vegetables did Simon buy in total, you can calculate this using the following steps:

1 pound equals to 16 ounces.

2 pounds + 8 ounces + 3 pounds + 15 ounces = 2 * 16 + 8 + 3 * 16 + 15 = 32 + 8 + 48 + 15 = 103 ounces

Result: Simon bought 103 ounces in total.