Question

The average of 4, 5, 3.5, 7.5, 9.5 and 6.5 is T​

Answer 1

Answer:

1 burger + 1 fries x 1 drink = 25

—————

3 drinks = 30 therefore dividing both sides by 3:

1 drink = 10

—————

1 cup + 2 burgers = 20 so:

10 + 2 burgers = 20 so:

10 + 2 burgers = 10 + 10 so:

2 burgers = 10 therefore dividing both sides by 2:

1 burger = 5

—————

1 burger + 2 fries* = 9 so:

5 + 2 fries = 9 so:

5 + 2 fries = 5 + 4 so:

2 fries = 4 therefore dividing both sides by 2:

1 fries = 2

(*fries is used to mean ‘one order of fries’)

—————

Gathering all of the bits we need we get the following solution:

1 burger + 1 fries x 1 drink = 5 + 2 x 10

Using order of operations (sometimes referred to as BEDMAS or BEMDAS)

Without brackets or exponents the solution to the equation begins with multiplication.

5 + 2 x 10 = 5 + 20 … and then addition:

5 + 20 = 25 therefore:

1 burger + 1 fries x 1 drink = 25