MBA Exam

If a^2 + b^2 =32 then determine the maximum value of 4ab.

1) 32
2) 64
3) 128
4) 256

Read Solution (Total 1)

64

product ab is max when a=b = x (say)
a^2 + b^2 =32
2x^2=32
x=4
4ab = 4*4*4=64
11 years agoHelpfull: Yes(1) No(0)

MBA Other Question

A person starts from the origin of the coordinate axis . He travels inthis pattern . 1 unit to right , (1/2) units up , (1/4) units right, (1/units down , and continues the above pattern . At what point will heultimately come to stop?

1) (4/3,2/5)
2) (3/2,4/3)
3) (2/5,4/3)
4) (4/5,4/3)
A cyclist had to ride 48km with a certain pre-assigned average speed. However, he rode the first 24 km with a speed reduced by 20% and the next 24 km with a speed exceeding the pre-assigned speed by 2 kmph . He took 5 hours to complete the trip . find the pre-assigned speed with which he had intended to travel.

1) 10 kmph
2) 8 kmph
3) 13 kmph
4) 16 kmph