What will come in place of the question mark (?) in each of the following number series ?
For the following questions answer them individually
The sum of digits of a two-digit number is 12. When the digits are interchanged, the resulting number is 36 more than the original number. What is the original two-digit number ?
A car covers first 39 km of its journey in 45 minutes and remaining 25 km in 35 minutes. What is the average speed of car during the whole journey ?
A, B and C entered into a partnership by investing Rs.64000, Rs. 52000 and Rs. 36000 respectively for a certain period of time. If A receives Rs.35584 as annual profit, what amount will Mr. C receive as his share in the profit ?
If a man runs at 6 kmph from his house, he misses the train at the station by 8 minutes. If he runs at 10 kmph, he reaches the station 7 minutes earlier than the departure of the train. What is the distance of station from his house? (in km)
In the year 2012, the ratio of the number of students in two institutes A and B was 7 : 15 respectively. In 2013, there was an increase of 25% in the number of students in institute A and that in institute B by 26%. What was the respective ratio of students in the institutes A and B in 2013?
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