Frank can walk 3 mi. per hour and he can ride $$5\frac{1}{4}$$ mi. per hour. By walking half of the distance and riding the rest, how long will it take him to go as far as he can ride in 4 hr.?

A man got 12 tons of hay from $$\frac{3}{4}$$ of his meadow. At that rate, how much will he get from the whole field?

If the diameter of a circle is 10 ft., what is the circumference?

How many revolutions per mile will a 36-inch wheel make?

Three times a number and 3 more make 27. What is the number?

The sum of 6 and two times a number is 16. What is the number?

In a class of 32 pupils, there are 4 more girls than boys. How many boys are there?

Henry said, "My garden is 10 ft. longer than it is wide. It takes 100 ft to enclose it." Find the width.

Find two consecutive even numbers whose sum is 18.