Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What word is pronounced the same if you take away four of its five letters?

Can you count the number of triangles in the picture below?

To tease, King Akbar told his most clever advisor Birbal to give his daughter one thing that she can eat when hungry, drink if she feels thirsty and can burn if she feels cold. King Akbar was shocked when Birbal gave Akbar's daughter one such thing that satisfies all of the above.

What did Birbal give to Akbar's daughter?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Where do you go to learn how to make ice cream?