IBPS Government Jobs Exams Numerical Ability Averages

An exam was conducted in a state over 110 centres. The average number of applicants per centre was found to be 1480. However, it was later realized that in one centre, the number of applicants was counted as 1525 instead of 1580. What was the correct average number of applicants per centre ?
A)1481 B)1479 C)1479.5 D)1480.5 E) None of these

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IBPS Other Question

Rohan can row a boat 65 Km upstream and 130 Km downstream in 23 hours, whereas he can swim 45 Km upstream and 104 Km downstream in 17 hours. Find the speed of boat in still water and the speed of stream.
A)4 kmph, 9 kmph B)8 kmph, 5 kmph C)9 kmph, 4 kmph D)5 kmph, 8 kmph E)10 kmph, 3 kmph A tea vendor has two types of mixture of tea with him. In 64 kg of first mixture ratio of tea to impurity is 5 : 3 and in 72 kg of second mixture the ratio of tea to impurity is 7 : 2. If he mixes these two mixture with 14 kg of pure tea in a large container, then find the ratio of tea to impurity in the large container.
A)3 : 1 B)10 : 3 C)11:4 D)7:3 E)None of these