Max went to a shopping mall with $35 in his wallet. He spent two fifths of the money he had in his wallet at the bookstore. How much money, in dollars, did he have left? $21
$26
$10
$13

21$

Step-by-step explanation:

Let the left money with Max be x .

Then , according to question:

35$-(2/5)×35$=x

Or, 35$-(2×7$)=x

Or, 35$-14$=x

Or, x=21$

Hence , 21$ was left with Max

the perimeter is increased by a factor of 2