book Maths Puzzle Numerical Ability

(2x-5y) (x +y)

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book Other Question

if the length of a room is 25ft x 72ft and shelves needed for that room are 2ft x 6ft. How many shelves can Iput in that room? Also the shelves are 5ft tall and the room is 12ft ta How do you find the percent of change in these math problems.

1.180 to 150

2. 15,000 to 12,000

3. 6 to 6.50