$5\ \left(w-7\right)=2\frac{1}{2}$  

If  $18\ =\frac{2}{3}h\ +7,\ then\ 2h=?$  

Write a simple equation to solve the problem.

Keith is now 18 years old. His age is 3 years younger than half of Mr. Ko's age. How old is Mr. Ko now?

Write a simple equation to solve each problem.

Ms. Wong has 60 apples. She has 20 % more apples than Justin. How many apples does Justin have?

Write an equation to solve the problem.

The area of a trapezium-shaped ticket is  $64\ cm^2$ . Its height is 4 cm, its upper base is 8 cm and its lower base is p cm. Find the value of p.

Write an equation to solve the problem.


A fish tank is 32 cm long and 10 cm wide. Amy puts 10 fish into the fish tank. If the volume of each fish is 12.8 $cm^3$ , how many centimeters will the water rise?