28. The area of a room is 273 Sq.m. If the
length of the room was 5m more, then the
area would have been 338 sq.m. What is
the length of the room?
(A) 31m
(B) 21m
(C) 42m
(D) 41m
Answers
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Answer:
Area : lb = 273m²
(l+5)b = 338m²
lb + 5b = 338m²
Subtract lb=273 from lb+5b=338
lb+5b-lb=273-338
5b = 65
b = 13
lb = 273
l = 273/b = 21
l = 21m
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