When 5 is subtracted from length and breadth of the rectangle, the perimeter becomes 26.' What is the mathematical form of the statement ? Choose the correct alternative answer for the question.
(A) x-y=8
(B) x+y=8
(C) x+y=23
(D) 2x+y=21
Answers
Answered by
4
Answer:
perimeter=2(l+b)
26. =2(l-5+b-5)
26. =2(l+b-10)
26=2l+2b-20
2l+2b=46
l+b=23
option c
Answered by
4
Answer is C
And here I am giving the solution also for better knowledge and understanding.
length and breadth are x and y respectively.
length = x - 5 and breadth = y - 5
Perimeter formula = 2(l+b)
⇒2 (x-5 + y - 5 ) = 26
⇒(x+y-10) = 26/2
⇒ x +y - 10 = 13
⇒x+y = 13 + 10
⇒ x + y = 23 (Answer)
That's it friend !!!!!!
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