For the following questions answer them individually
Evaluate the following.
$$75 - 50 \div 5$$ of $$2 + 36 \div 6$$ of $$4 \times 2 (18 - 5 of 2)$$
In a circular race of 2,700 m, P and Q start from point A in opposite directions at speeds of 23 km/h and 49 km/h, respectively. What is the time taken by them to meet for the first time?
The average of 15 results is 60. If the average of the first eight results is 58, and that of the last six is 62, then find the ninth result.
If 18 workers can lay a road in 15 h, then how many more workers are required to lay the same road in 9 h?
A thief is noticed by a policeman from a distance of 150 m. The thief starts running and the policeman chases him. The thief and policeman run at the speed of 11km/h and 12km/h, respectively. What is the distance between them after 6 minutes?
Ravi sold two bikes for ₹ 42,188 each. On one bike he gained 20% while on the other he lost 20%. How much per cent does he gain or lose overall?
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