11. John is building a wall. When he uses 750 bricks, the wall is 6 metres long and 1.25m high. John wants the finished wall to be 10 metres long and 1.25 metres high.
How many more bricks does John need to finish the wall?
(Total 3 marks)

750 blocks = 6m long

x blocks = 10m long

750×10 = 6x

7500 = 6x

divide both sides by 6

7500/6 = 6x/6

1250 = x

x = 1250

.

. . 1250 blocks are needed to finish the wall of 10m long

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