Question

there are 9 equal stacks of tiles. a worker loads 4 stacks of tiles in a wheelbarrow and 5 stacks on a truck. how many tiles are in the truck, if there are 28 tiles in the wheelbarrow?
a 35
b 36
c 45
d 63

Explanation:

Step1: Find tiles per stack

First, find how many tiles are in one stack. The wheelbarrow has 4 stacks with 28 tiles total. So tiles per stack: $28 \div 4 = 7$.

Step2: Calculate tiles in truck

The truck has 5 stacks. Each stack has 7 tiles, so total tiles in truck: $5 \times 7 = 35$? Wait, no, wait. Wait, original problem: 9 equal stacks. Worker loads 4 stacks (wheelbarrow) with 28 tiles? Wait, maybe I misread. Wait, "There are 9 equal stacks of tiles. A worker loads 4 stacks of tiles in a wheelbarrow and 5 stacks on a truck. How many tiles are in the truck, if there are 28 tiles in the wheelbarrow?" Oh! Wait, wheelbarrow has 4 stacks, total 28 tiles. So per stack: $28 \div 4 = 7$ tiles per stack. Then truck has 5 stacks, so $5 \times 7 = 35$? But option A is 35. Wait, let me check again.

Wait, the problem: "There are 9 equal stacks of tiles. A worker loads 4 stacks of tiles in a wheelbarrow and 5 stacks on a truck. How many tiles are in the truck, if there are 28 tiles in the wheelbarrow?"

So wheelbarrow: 4 stacks = 28 tiles. So 1 stack: $28 \div 4 = 7$ tiles. Then truck: 5 stacks. So 5 * 7 = 35. So option A is 35.

Wait, maybe I made a mistake earlier. Let's redo:

Step1: Determine tiles per stack. Wheelbarrow has 4 stacks, total 28 tiles. So tiles per stack: $28 \div 4 = 7$.

Step2: Truck has 5 stacks. So total tiles in truck: $5 \times 7 = 35$. So the answer should be A. 35.

Answer:

A. 35