Elitmus Exam

what is angle between hands of the clock 5:30?

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Elitmus Other Question

after 38 liters of petrol were poured into the tank. it was still 5% empty. how much petrol must be poured int the tank in order to fill it? how many meters of carpet 50cm wide will be required to cover the floor of a room 30m*20m?
option
1) .50
2) .700
3) .1200
4) .none
5) .420