MBA Exam

I used 6 litres of oil paint to paint a map of India 6 meters high. How many litres of paint would I need to paint a proportionally scaled map 18 metres high?

1) 54
2) 18
3) 30
4) indeterminate

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MBA Other Question

A, B, C, D and E are five taps. The capacity of B is 2 times that of A and the capacity of C is 3 times that of A. Capacities of D and E are 4 and 5 times that of A respectively. In the first case A, C and E act as input pipes and B and D act as output pipes. In the second case C, D and E act as input pipes and A and B act as output pipes. If A and D working together as input pipes can fill the tank in 4 hours, then what is the difference in time required to fill the tank in the first and second cases stated above?

1) 4.44 hrs
2) 3.33 hrs
3) 2.22 hrs
4) 1.11 hrs
5) 5.55 hrs
The sum of the first and second digits of a four digit number equals twice the sum of the other two digits.The sum of the first and fourth digits equals the sum of the second and third digits. The first and third digits have the maximum possible values that satisfy these conditions. Find the sum of 1st and 3rd digit.What can be the shortest method to solve this ? :/

1) 12
2) 13
3) 14
4) 15
5) none.