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Chapter 2: Q28. (page 108)

Solve the equation using mental math.

b5=8

Short Answer

Expert verified

Value of given equation is b=40.

Step by step solution

01

Step-1- Think provided equation as question in words

b5=8

The question will be as:

What number need to divide with 5 so that it becomes 8?

Hence answer for above question is 40.

02

Step-2- Checking our answer is correct or not 

Substitute b=40in given equation b5=8.

b5=8405=88=8

03

Step-3- Conclusion

Therefore, as both sides of above expression are same, the value of given equation is b=40.

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