Today, we shall travel a distance of 94.5 km. If 0.078 litre of petrol is used per kilometer, let's calculate the total amount of petrol required.

Alisha's brother took 1.4 hours to reach Shibpur Lauch pier (ghat) from his house in a cycle. If the spped of his cycle is 11.5 km per hour,them let us calculate the distance of Shibpur l\Launch pier Alisha's house.

A man has to spend Rs.16 per km on petrol if he rides his motor-car at 30 km per hour and the cost on petrol rises to Rs.20 per km if he rides his car at 45 km per hour. He has Rs.200 to spend on petrol and desires to travel maximum distance within 2 hours. Formulate the given data in the form of inequations and show graphically the region representing the solution of the inequations.

A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of -2dB per km. If the communication channel has a total length of 5 km, the power of the signal received is [ gain in dB = 10 log (P_(0)//P_(t)) .

An impure sample of (NH_(4))_(2)SO_(4) is supplied to a laboratory. 3.6g of the supplied (NH_(4))_(2)SO_(4) salt on heating with NaOH forms NH_(3) gas. 100 mL of 0.5(N)H_(2)SO_(4) is required for the complete neutralisation of the liberated NH_(3) gas. calculate the percentage purity of the impure sample. let us assume, the impurity of the sample is insoluble in NaOH.

For complete neutralisation of 25 mL of Na_(2)CO_(3) solution (specific gravity 1.25g*mL^(-1) ), 32.9 mL of HCl solution containing 109.5g of the acid per litre is required. Calculate the volume of 0.84(N) H_(2)SO_(4) that will be neutralised by 125g of Na_(2)CO_(3) solution.