Basic algebra

A farmer has 20 cows. If he buys 10 more, how many cows does he have in total?

• 30

• 40

• 25

• 15

If the cost of 5 pens is $25, what is the cost of each pen?

• $5

• $15

• $20

• $10

If the length of a rectangle is 5 more than its width and the perimeter is 26, find the length and width of the rectangle.

• Width: 6, Length: 10

• Width: 2, Length: 7

• Width: 3, Length: 8

• Width: 4, Length: 9

A car travels at a speed of 60 miles per hour. How far will it travel in 3 hours?

• 180 miles

• 120 miles

• 360 miles

• 90 miles

If 3 times a number is 24, what is the number?

• 8

• 12

• 6

• 10

The sum of two consecutive even numbers is 50. Find the numbers.

• 24 and 26

• 30 and 20

• 25 and 25

• 22 and 28

If the cost of 8 books is $64, what is the cost of each book?

• $6

• $8

• $12

• $10

A rope is 5 meters long. If 3 meters are cut off, how long is the remaining rope?

• 2 meters

• 6 meters

• 1 meter

• 4 meters

The area of a square is 49 square units. Find the length of each side.

• 8

• 10

• 6

• 7

If 4 times a number is 36, what is the number?

• 15

• 6

• 9

• 12