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Rohit Jain

· started a discussion

· 1 Months ago

2(l+b)=160
l+b=80......(i)
4a=160
a=40
a^2=1600
l*b=1600-100=1500
b=1500/l...put in eqn.(i)
30(option a also satisfying the eqn)

Question:
The perimeter of a rectangle and a square are 160 m each. The area of the rectangle is less than that of the square by 100 sq m. The length of the rectangle is.
Options:
A) 30 m 
B) 60 m 
C) 40 m 
D) 50 m 
Solution:

Ans: (d)

Pushpum Krishna

· commented

· 1 Months ago

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