Answer:
Jerry-13
Tom-8
Step-by-step explanation:
three years ago, Jerry was 10 and Tom was 5 so Jerry was twice older than Tom. Then in 7 years, Jerry will be 17 years old and tom will be 12, so he will be 5 years older than tom. the answer became 13 and 8 because the question is to find their present age. so 13-3 is 10 and that's Jerry's age 3 years ago.