Math Olympiad (3rd & 4th Form)

Yeti Cups are bought by a vender for $25 each and resold at $40 each. What is the percentage profit.

• 45%

• 60%

• 10%

• 25%

An engineer earns an annual salary of $40, 200. Calculate his gross monthly salary.

• $4550

• $2550

• $5550

• $3350

Express in scientific notation: 0.004 2

• 4.2 x 10³

• 0.42 x 10^-3

• 4.2 x 10²

• 4.2 x 10^-3

Express as a basic numeral: 3.8 x 10¹

• 38

• 0.38

• 3.8

• 380

Expand and Simplify: 3 (𝑥+7) + 4 (𝑥+3)

• 5x + 31

• 7x + 33

• 6x + 32

• 8x + 32

Solve using the elimination method:

4x + y = -1

2x + 3y = -13

• x = -2

  y = -3

• x = 1

  y = -5

• x = 1

  y = 5

• x = 2

  y = 3

Multiplication with powers:

5² x 5⁴

• 5⁸

• 5²

• 5^-2

• 5⁶

Two step equations, solve:

3h + 4 = 7

• h = 3

• h = 3h

• h = 1

• h = 3.666

Raising powers, simplify:

(4²)⁵

• 4⁷

• 4¹⁰

• 4^-3

• 4^2/5

What is the equation of a straight line?