For the following questions answer them individually
Simplify
$$2.5 \times \left[144 + 198 \times \left\{121 \times 81 + \left(11 \times 9\right)\right\}\right]$$
There are 3 members in a family. The average age of the father and mother is 40 years.
The average age of the father, mother and daughter is 30 years. Find the age (in years) of the daughter.
A shopkeeper sells an item at a profit of 15% and uses a weight which is 20% less. Find his actual profit percentage.
Find the smallest number that can be subtracted from 148109326 so that it becomes divisible by 8.
A policeman noticed a thief from 300 m. The thief started running and the policeman was chasing him. The thief and the policeman ran at the speeds of 8 km/h and 9 km/h, respectively. What was the distance between them after 3 minutes?
A, B and C, working alone, can complete a job in 16, 24 and 36 days, respectively. In how many days can they complete the job if they work together?
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