Question

Students are playing a game. In the game, students collect and trade building materials. Materials of equal value used for trading are shown in the table.
Materials of equal value for trading
​1 stone = 4 logs
​1 brick = 10 logs
​2 logs = 150 nails
Part A
How many stones are needed to trade for 6 bricks?
Part B
How many nails are needed to trade for 3 brick?

Answer 1

Answer:

• Part A 15 Stone
• Part B 2250 nails

Answer 2

Given:

1 stone = 4 logs

​1 brick = 10 logs

​2 logs = 150 nails

Part A: Find the number of stones needed to trade 6 bricks:

1 brick = 10 logs

6 bricks = 10 x 6

6 bricks = 60 logs

4 logs = 1 stone

1 log = 1/4 stone

60 logs = 1/4 x 60

60 logs = 15 stones

Part B: Find the number of nails needed to trade 3 bricks:

1 brick = 10 logs

3 bricks = 10 x 3

3 bricks = 30 logs

2 logs = 150 nails

1 log = 150 ÷ 2

1 log = 75 mails

1 log = 75 nails

30 logs = 75 x 30

30 logs = 2250 nails