Question

On Monday, Maggle ran n miles. On Tuesday, she ran 90% of the number of miles that she ran on Monday. On Wednesday, she ran 50% of the

number of miles that she ran on Tuesday.

Move a symbol to the box and expressions to the blanks to create two equivalent expressions that represent the total number of miles

Maggie ran on Monday, Tuesday, and Wednesday.

First expression: n +0.91

Second expression:

+

х

0.45

0.45n

0.5

0.5

1.35

1.5

2.35

Answer 1

`Total = 2.35n`

Explanation:

Given

Monday = n

Tuesday = 90% of Monday

Wednesday = 50% of Tuesday

Required

Determine the total miles

We have:

Tuesday = 90% of Monday

Substitute n for Monday

Tuesday = 90% of n

`Tuesday = 90\% * n`

Express percentage to decimal

`Tuesday = 0.90 * n`

`Tuesday = 0.90n`

We also have that:

Wednesday = 50% of Tuesday

Wednesday = 50% * Tuesday

Substitute 0.90n for Tuesday

`Wednesday = 50\% * 0.90n`

Express percentage to decimal

`Wednesday = 0.50 * 0.90n`

`Wednesday = 0.45n`

The total number of miles is:

`Total = Monday + Tuesday + Wednesday`

`Total = n + 0.90n + 0.45n`

`Total = 2.35n`