IBPS Government Jobs Exams Numerical Ability Time and Work

A can complete a piece of work alone in x days but B takes (2x–4) days to complete the same piece of work. If the efficiency of B is 40% less than that of A, then in how many days A and B together can complete the piece of work?
A) 6 days B) 8 days C) 7.5 days D) 12.5 days E) None of these

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IBPS Other Question

The length of the diagonals of a rectangle are 15 meters. If the sides of the rectangle are increased by 8%, then what will be the new value of the diagonal?
A) 16.80 m B) 16.28 m C) 16.20 m D) 17.5 m A dishonest milkman mixes milk to mineral water in the ratio of 5:3. He sells the mixture at the cost price of milk and earns a profit of 20%. If the price of mineral water is Rs. 20 per litre, then the price of one litre milk is how much percentage more than that of one litre mineral water?
A) 50% B) 60% C) 75% D) 80% E) None of these