Mrs. Morton has a special reward system for her class. When all her students behave well, she rewards them by putting 3 marbles into a marble jar. When the jar has 100 marbles or more, the class has a party. Right now, the jar contains 24 marbles.

Let r represent the number of additional times the class is rewarded. Write an inequality to determine how many more times the class needs to be rewarded in order to earn a party.

What is the minimum whole number of additional times they need to be rewarded so they can have a party?

Question

Mathematics

Guest

21 June, 05:16

Mrs. Morton has a special reward system for her class. When all her students behave well, she rewards them by putting 3 marbles into a marble jar. When the jar has 100 marbles or more, the class has a party. Right now, the jar contains 24 marbles.

Let r represent the number of additional times the class is rewarded. Write an inequality to determine how many more times the class needs to be rewarded in order to earn a party.

What is the minimum whole number of additional times they need to be rewarded so they can have a party?

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Answers (1)

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Jair Ibarra · Answer 1

24 + 3r = 100

Subtract 24 from both sides.

24 - 24 + 3r = 100 - 24

Divide

3r = 76

3r/3 = 76/3

r = 25.3

Rounded to 25.

They would have to be rewarded 25 times in order to have a party.