Sally is three times as old as Sam. The sum of their ages is 84. How old is Sally?

1 answer:

Pepsi [2]3 years ago

4 0

Answer:

Sally is 63

Step-by-step explanation:

Represent Sally's age by x and Sam's by y.

Then x = 3y and x + y = 84.

Substituting 3y for x in the second equation, we get:

3y + y = 84, or 4y = 84, or y = 21. Since Sally is 3 times as old as Sam, we multiply 21 by 3: Sally's age is 3(21 years) = 63 years

You might be interested in

Lina20 [59]

If you're looking for the decimal it is

0.71428571428

4 0

3 years ago

Elena L [17]

1 line, because it’s between 2 points

3 0

4 years ago

Bezzdna [24]

Circle graphs or pie charts are used to represent data in percentages or proportions

<h3>People that voted for Goron</h3>

The total number of votes is given as:

Total = 640

The circle chart is not given.

So, we make use of an assumed value

Assume 30% voted for Goron

The number of people would be:

Goron = 30% * 640

Evaluate

Goron = 192

Hence, 192 voted for Goron using the assumed value

<h3>People that voted for Smith or Fishman</h3>

Assume 45% voted for Smith or Fishman

The number of people would be:

Smith or Fishman = 45% * 640

Evaluate

Smith or Fishman = 288

Hence, 288 voted for Smith or Fishman using the assumed value