If 13 : 17 :: 28 : x, find x.

The difference between 7/10 and 6/9 in lowest terms is:

The complement of 25° plus the supplement of 105° equals:

A 2-digit number has tens digit 10 and ones digit 2. What is the sum of its digits?

A remaining distance of 165 km is to be covered at 45 km/h. How many minutes will this take?

A jeep covers 220 km at 50 km/h and then 230 km at 75 km/h. What is the average speed for the whole journey?

A cadet cycles 330 km at 70 km/h. How many hours does the journey take?

Which is the greatest: 0.75, 0.70, 7/10, 0.7?

Find the product: 14.6 × 4.00.

How many diagonals does a 11-sided polygon have?

How many factors does 84 have?