Selina solutions

Selina solutions

Grade 6

Simple (Linear) Equations (Including Word Problems) | Revision Exercise

Question 10

Q10) Find the three consecutive integers whose sum is 78.

Solution 10:

Sum of three consecutive numbers = 78

Let first number = x

Then second number = x +1

And third number = x + 2

Then x + x + 1 + x + 2 = 78

3x + 3 = 78

3x = 78 - 3 = 75

x =25

First number = 25

Second number = 25 +1 = 26

and third number = 26 + 1 = 27

Then the three required numbers are 25, 26, 27

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subject-cta

Question 10

Q10) Find the three consecutive integers whose sum is 78.

Solution 10:

Sum of three consecutive numbers = 78

Let first number = x

Then second number = x +1

And third number = x + 2

Then x + x + 1 + x + 2 = 78

3x + 3 = 78

3x = 78 - 3 = 75

x =25

First number = 25

Second number = 25 +1 = 26

and third number = 26 + 1 = 27

Then the three required numbers are 25, 26, 27

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your mathematics exam ?

Learn from an expert tutor.

Book a free class now
subject-cta
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