A train moves at a speed of 35 km/h for the first 2 hours and at a speed of 50 km/h for the next 4 hours. Find the average speed of the train during the entire journey.

Adding 335 to 5A7 results in 8B2. The number 8B2 is divisible by 3. Accordingly, what will be the maximum possible value of A?

A travels 25% faster than B. They started their journey from a point P to another point Q and reach at the same time on point Q. Distance between P and Q is 85 km. On the way, however, A lost about 20 minutes while stopping for petrol. What was the speed of B?

If $$ {(x^{3})^{3} × x^{5}\over{x^{4}}}=x^{n}$$ then find the value of n.

If $$ {a\over 3}={b\over3}={c\over4}$$ then find the value of $$ {a+b+c\over c}$$.

The simple interest on an amount at the rate of 7 percent for five years is Rs 700. So how much is the principal?

Directions: Answer the questions based on the information given below:
The following line graph shows revenue and expenditure of company A for 5 years (in Lakhs):

In which year was the profit percentage highest?
Given that: Profit = $$\left({Revenue-Expenditure\over Expenditure } \right)\ $$

if a+b+c=7 and a³+b³+c³-3abc=175, then what is the value of (ab+bc+ca)?