The rectangle is 12 cm long and 4 times less wide. What is the area of the rectangle? The bus covered 300 km

The rectangle is 12 cm long and 4 times less wide. What is the area of the rectangle? The bus covered 300 km in 6 hours. What distance will the car cover in the same time if its speed is 10 km / h more than the speed of the bus?

1) Calculate the area of a rectangle whose width is 4 times less than the length equal to 12 cm, according to the formula:

S = a * b = 12 * (12: 4). First of all, let’s find the value in parentheses:

S = 12 * 3 = 36 cm².

2) Determine the speed of the bus, which traveled 300 km in 6 hours, using the formula:

V = S: t = 300: 6 = 50 km / h.

The speed of the car is 10 km / h more and is 50 + 10 = 60 km / h.

We find out the distance that it will travel in 6 hours, according to the formula:

S = V * t = 60 * 6 = 360 km.