Mark got a 20% raise for his salary. if this salary was $1,800, what is his new salary

We have to find what 20% of $1,800 is. 

We can do this by multiplying 0.20 and $1,800
Lets do that :)

0.20 x $1,800 = $360 

Now we know that 20% of $1,800 is $360 

Since it is asking for his new salary with an extra 20%
we add $1,800 and $360  

Soo..
$1,800 + $360 = $2,160 

This means that mark's new paycheck is $2,169 

Good Luck! :)

Ithink not so sure but i tried it out and came out to be b