Số trung bình cộng của hai số bằng 8. Biết một trong hai số bằng 9, tìm số kia?

Assemble the proof by dragging tiles to the statements and reasons column

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?