If 20% of a is equal to 80% of b which of the following is equal to a + b?
- 3a
- 2.5a
- 2a
- 1.5a
Explanation
Let's start by using the information that 20% of a is equal to 80% of b. We can write this as an equation:
0.20a = 0.80b
To simplify, divide both sides by 0.20:
a = 4b
Now, we want to find a + b. We can substitute the expression for a in terms of b:
a + b = 4b + b
Combine like terms:
a + b = 5b
Now, we can express this in terms of a by substituting a = 4b:
a + b = 5(1/4)a
a + b = 1.25a
So, the correct answer is: 1.25a
Related MCQs
- 10 and 30
- 15 and 25
- 20 and 20
- 12 and 28
اس سوال کو وضاحت کے ساتھ پڑھیں
- (t² + 4)(t - 2)(t - 2)
- (t² - 4)(t² - 4)
- (t² + 4)(t + 2)(t - 2)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- +4
- -4
- +16
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *