Joseph needs 345 cement blocks to build a wall 40 cm thick. He needs 205 cement blocks to build a wall 25 cm thick. Each block costs $0.75. How much more will the thicker wall cost?

9514 1404 393

  $105

Step-by-step explanation:

The thicker wall takes 345 -205 = 140 more blocks. Each of those costs $0.75, so the added blocks will cost ...

  140 × $0.75 = $105

The thicker wall will cost $105 more.

1)=

2) =

3)=

4)=

5)=

6)=

7)=

8)=

9)= 2  1/4

10)=  1  1/2

11) = 1 4/5

12)= 2  5/6

13)= 1 7/10

14)= 2 7/10

15)= 2 1/5

16)= 2 1/10

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