Please help. Thank you.
nancy cut squares from a rectangular cardboard measuring y metres by 2 metres. Each square had an area of 400 cm2. What was the maximum number of squares she had cut?
Source: Rosyth
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Answer
alfretztay
400 = 20 x 20
y m = 100y cm
100y/20 = 5y
2m = 200cm
200/20 = 10
10 x 5y = 50y
Ans : 50y squares.
SAHMom
Each square is 20cm by 20cm (400 cm2).
On the rectangle side of 2 m (200 cm), we can fit 10 squares.
On the rectangle side of y m (100y cm), we can fit 5y squares.
No. of squares = 10 x 5y = 50y