A website Maths Puzzle Numerical Ability Clocks and Calendars

If there are 36 hours in a day instead of 24, 18 numbers in a clock instead of 12, and 1 hour equal to 90 minutes and 1 minute equal to 60 secs.
Then what is angle made in clock, when the time is 15:50?
97, 100, 111, 114

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A website Other Question

Amit can complete a piece of work in 2.25 days. Badri takes double the time taken by Amit. Chetan takes double that of Badri, and Das takes double that of Chetan to complete the same task. They are split into two groups (of one or more persons) such that the difference between the times taken by the two groups (of one or more persons) such that the difference between the times taken by the two groups to complete the same work is minimum. What could be the composition of the faster group?

A. Amit and Das

B. Badri and Chetan

C. Badri, Chetan and Das

D. Amit alone
Contractor has 2 complete work within a fixed time. If he is late he has to pay fine. The first day it is Rs 200 and from then on it increases by 25 per day. He has to pay Rs 9450. How many days he got late.