Question

UNIT 4

Rates and Measurement
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LESSON 12
Rates and Measurement Unit Test
Rates and Measurement Unit Test
You saved $100 in 5 months. At this rate, how much will you save in 15 months? What is the effect of
your savings, if you save $110 in 5 months? (1 point)
O In 15 months, you will save $300. If you change your savings to $110, your total savings will decrease.
O In 15 months, you will save $300. If you change your savings to $110, your total savings will increase.
In 15 months, you will save $500. If you change your savings to $110, your total savings will increase.
In 15 months, you will save $285. If you change your savings to $110, your total savings will increase.

Answer 1

If you save $100 in 5 months, you will save $300 in 15 months. Changing your savings to $110 will not affect the amount saved in 15 months.

Step-by-step explanation:

To find out how much you will save in 15 months at the same rate as saving $100 in 5 months, you can set up a proportion. Since the amount of money saved is directly proportional to the number of months, you can write the proportion as:

$100 / 5 months = X / 15 months

To solve for X, cross-multiply:

$100 * 15 months = 5 months * X

X = $300

So, in 15 months, you will save $300 if you continue saving at the same rate as before.

If you change your savings to $110, it will not affect the amount you will save in 15 months. The proportion will still be:

$110 / 5 months = X / 15 months

Using the same steps as before, you can calculate that X is still $300, so your total savings will not change.