IBPS Government Jobs Exams Numerical Ability Ratio and Proportion

The ratio of incomes of A and B in 2017 is 2:3 and ratio of incomes of A in 2017 and 2018 is 4:5. Find the expenditure of A in 2018 if saving in the same year is Rs. 4000. It is given that in 2017 sum of income of A and B is Rs. 25000.
A) Rs. 8000 B) Rs. 9500 C) Rs. 8500 D) Rs. 10000 E) Rs. 10500

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IBPS Other Question

Present age of Rakesh is 100/3% of the age of his father and his father is half of the age of his grandfather. The average of the present ages of all of them is 110/3 years. What was the ratio of their ages 10 years ago?
A) 11 : 33 : 66 B) 1 : 43 : 56 C) 21 : 43 : 76 D) 1 : 23 : 56 E) 1 : 26 : 56 A and B working alone can complete a work in 30 and 15 days respectively. If 50% of the work is completed by C in 3x days and the remaining work is completed by A and B working together in x days, then find the time taken by B and C together to complete the work.
A) 15 days B) 18 days C) 12 days D) 10 days E) None of these