Question

18

A boy is moving a rectangular lawn 40 lt. long and 30 ft. wide. He
has cut all of it except for a rectangle that is 20 it, long and 15 ft
wide. What Iractional part of the loan remains uncl?
3
1
B
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EL NOLA
1
1

Answer 1

40x30= 1200, 20x15=300, 300/1200= 1/4.

Explanation:

You can also visualize it. Imagine a field 40’ long and the boy cut the top 20’ of it but left 20’ of the bottom, he would have cut half of it at this point. Now it’s 30’ wide and he cut the left 15’ of what’s remaining but left the right 15’ uncut. So now there’s a 20’x15’ bottom right corner left uncut. There are 4 sections that are 20’x15’ and he left one out of four uncut, otherwise written as 1/4.