IBPS Government Jobs Exams Numerical Ability Averages

The average weight of A, B, C and D is 40 kg. A new person E is also included in the group, then the average weight of the group is increased by 1 kg. Again a new person F replaces A, then the new average of 5 person becomes 42. The average weight of B, C, D, F is
A) 42.5 B) 41.25 C) 42 D) None of these E) Cannot be determined

Read Solution (Total 1)

B). 41.25
Abcd=40
Abcde=41
E=41+4= 45
Or
Abcde =41*5
Bcdef=42*5
Bcdef=210-45
Bcdef/4= 165/4 = 41.25
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IBPS Other Question

3 men can do a piece of work in 12 days, 5 women in 8 days and 20 children in 3 days. In how many days can a man, a woman and a child working together complete the piece of work ?
A) 15 days B) 16 days C) 12 days D) 14 days E) None of these Ajay gives 40% of his monthly salary to his father. 50% of his remaining salary, he invests in share market and insurance in the ratio of 5:3. If the difference between the amount he gave to his father and the amount he spent on share market is Rs 6800. Find monthly income of Ajay.
A) Rs 64000 B) Rs 56000 C) Rs 68000 D) Rs 48000 E) Rs 32000