James have some money in his wallet, but he does not know the exact amount of money he has. When Alice asks him, how much money he has, he says ''I have $70 $$ give or take $15 $$ ''. What is the least amount of money James can have?

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Solution

The correct option is A 55
Solution:
Step I : Underline the Key words

James have some money in his wallet, but he does not know the exact amount of money he has. When Alice asks him, how much money he has, he says ''I have $70 \$$ give or take $15 $$ ''. What is the least amount of money James can have ?

Step II : Recognize the variable

Let James have $ m in his wallet.

Step III : Form the equation

Look at the sentence : ''I have $70 $$ give or take $15 $$ ''
$\Rightarrow$ 70 is the critical point
Also, the value of m will be at a distance of 15 from the critical point. Thus, we have
$| m - 70 | = 15$ ,
$m - 70 = 15 o r m - 70 = - 15$
$\Rightarrow$ m = 85 or m = 55
Therefore, the minimum amount of money James can have is $55 $$

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