ok so what's the question.
Answer:
1000 : 1000 : 1500
Step-by-step explanation:
2 + 2 + 3 = 7
3500 ÷ 7 = 500
2 × 500 = 1000
3 × 500 = 1500
2 1/2
Hope this helps :P
Have a great day!