MBA Exam

A tank is fitted with a pipe which fills it at 10 litres/hrs. After 4hours, a leak develops in in tank. If the leak had developed after 3 hrs instead of 4. it would have taken 2 hrs longer to fill the tank. How long would it take to fill the tank, of capacity 100 lts if the leak existed from the beginning? (kindly provide the solution, if possible)

1) 20hrs
2) 30hrs
3) 15
4) 25

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MBA Other Question
When ‘2’ is added to each of the three roots of x3 – Ax2 + Bx – C = 0, we get the roots ofx3 + Px2 + Qx – 18 = 0. A, B, C, P and Q are all non-zero real numbers. What is the value of(4A + 2B + C)?(a) 10 (b) – 10 (c) 11 (d) Cannot be determined

1) a
2) b
3) c
4) d
 What is the area of the shaded region if radius of the smaller circle is 7 cm and that of the bigger one is 7√3 cm?

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