Find the value of given expression.

30 – [40 – {56 – (25 – 13 – 12)}]

At what approximate time between 4 and 5 am will the hands of a clock be at right angle ?

The expenses on rice, fish and oil of a family are in the ratio 12 : 17 : 3. The price of these articles are increased by 20 % , 30 % and 50 % respectively. The total expenses of family on these articles are increased by: 

25% of 120 + 40% of 380 = ? of 637

An alloy contains copper and tin in the ratio 3: 2. If 250 gm of copper is added to this alloy then copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy? 

Direction: Study the following graph carefully and answer the questions that follow:
The graph given below represents the number of users of two broadband services A and B across 5 cities P, Q, R, S and T.

What is the respective ratio of the number of users of brand A in city P to the number of users of brand B in the City S?

The number 2918245 is divisible by which of the following numbers?