Others Maths Puzzle

There are two persons Jack and Jill start a race on a upslope hill track of 440 feet . One's speed is less than other.
Both start the race at the same time. Speed while coming down is 1.5 times the speed of going up.Jack meets Jill when
He was returning from the top at a distance of 20 feet from the top.Both end the race at a time difference of 1/2 minute.
What is total time taken by Jack to complete the race.

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Others Other Question
A tank can be filled in by an inlet pipe of circular cross section in 10 min. Another tank twice as big is filled in by 3 inlet pipes whose diameters are in the ratio 1 : 2 : 3 . If the smallest pipe of these is four times as much in cross section as the pipe of the first tank, find the time taken to fill the second tank. [Speed of water in the second tank is half the speed of the water in the first tank.] The palindrome pqrqp is divisible by 45. How many such numbers are there if p, q, and r are all distinct digits?