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2. Independent Activity 2 Solve the following using working backward. Write your answers in your notebook.
1. I think of a number and I divide it by 3. I multiply it to the sum of 4 and 5. The answer is 81. What is the number?
2.The area of a rectangular garden is 15 square meters, if the length is 5 meters. What is the width?
3.A number is added to 24 and subtracted by 5. The total is 50. Find the number.
4. Joel drives 1 of the way to his office and still drives the remaining 9 kilometers 9 in the next few minutes. How far does he live from the office?
5. I think of a number and multiplied it by 5. Then, I subtracted 4. The total is 26. What is the number? ​

2 Independent Activity 2 Solve The Following Using Working Backward Write Your Answers In Your Notebook 1 I Think Of A Number And I Divide It By 3 I Multiply It class=

Sagot :

Answer:

1. 27
2. 3
3. 31
4. 12
5. 6

Step-by-step explanation:


1. (n/3)(4+5) = 81
(n/3)(9) = 81
n/3 = 81 / 9
n = (81/9)(3)
n = 27

2. 5 x n = 15 , since area of a rectangle is Length x Width
5n = 15
n = 15/5
n = 3

3. (n + 24) - 5 = 50
n + 24 = 50 + 5
n + 24 = (50+5) - 24
n = 31

4. n = (1/4n) + 9
n - 1/4n = 9
3/4n = 9
n = 12


5. (n x 5) - 4 = 26
(5n) = 26 + 4
5n = 30
n = 30 / 5
n = 6

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