Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The number of students who passed in Bengali is –

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. What was her average rate of reading the pages per hour? 

A pipe can empty a tank in 40 minutes. A second pipe with diameter twice as much as that of the first is also attached with the tank to empty it . The two pipe together can empty the tank in: 

What are the roots of the equation log₁₀(x²-6x+45) =2?

The cost price of an article is Rs. 800. After allowing a discount of 10 %, a gain of 12.5 % is made. Then the marked price of the article is 

The diameter of a wheel is 14 cm. How many rotations will it take to cover a distance of 44 kilometres?

A train 270 meters long is running at a speed of 36 km per hour then it will cross a bridge of length 180 meters in : 

Divide Rs. 7,500 among A, B and C such that A’s share to B’s share is in the ratio 5:2 and B’s share to C’s share is in the ratio 7 : 13. How much will B receive ?