IBM Company Numerical Ability Area and Volume

The ratio between the perimeter and the breadth of a rectangle is 5 : 1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?
A. 16 cm B. 18 cm
C. 24 cm D. Data inadequate
E. None of these

Read Solution (Total 4)

2(l + b) = 5
b 1

2l + 2b = 5b

3b = 2l

b = 2 l
3

Then, Area = 216 cm2

l x b = 216

l x 2 l = 216
3

l2 = 324

l = 18 cm.
9 years agoHelpfull: Yes(8) No(0)

let no of box is x. so jared took x/6
remaining = x-x/6
5x/6
sara took 5x/24
remaining 5x/6-5x/24
15x/24
from question remaining is 15x/24=15
so x=24
11 years agoHelpfull: Yes(7) No(11)
2(l+b)/b=5/1 eq.......1

l*b=216

b=216/l

2(l+216/l)/(216/l)=5/1
l=18 ans
9 years agoHelpfull: Yes(5) No(0)
http://www.indiabix.com/aptitude/area/
9 years agoHelpfull: Yes(0) No(0)

IBM Other Question

The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:
A. 15360 B. 153600
C. 30720 D. 307200 The length of a rectangular plot is 20 metres more than its breadth. If the cost of fencing the plot @ 26.50 per metre is Rs. 5300, what is the length of the plot in metres?
A. 40 B. 50
C. 120 D. Data inadequate
E. None of these