MBA Exam

There are eight boxes and each box contains seven gold coins. Each coin in one of the boxesweighs 12 grams and each coin in the rest of the seven boxes weighs 10 grams. What is theminimum number of weighings required to identify the box containing 12 gram coins using anelectronic weighing machine?(a) 1 (b) 5 (c) 7 (d) 3

1) a
2) b
3) c
4) d

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MBA Other Question
Vijay and Gaurav participated in a bullock cart race. For the first hour, their speed was the same. After that, Vijay increased his speed by 5% every hour. Gaurav increased his speed by 1% in the first hour, by 3% in the next hour, by 5% in the next hour, by 7% in the next hour and so on. At what time will Gaurav overtake Vijay?

1) After 2 hours & 40 minutes
2) After 3 hours 20 minutes
3) After 4 hours & 10 minutes
4) None of these
 Shyama and Vyom walk up an escalator (moving stairway). The escalator moves at a constant speed. Shyama takes three steps for every two of Vyom’s steps. Shyama gets to the top of the escalator after having taken 25 steps, while Vyom (because his slower pace lets the escalator do a little more of the work) takes only 20 steps to reach the top. If the escalator were turned off, how many steps would they have to take to walk up? 40506080None of these

1) 1
2) 2
3) 3
4) 4
5) 5