total discount = 20%+10%=30%
original price of the smartphone = $600
30% of 600= 30/100*600
=180
so total discount is $180
The price after discount = 600-180=420 $
225 employees work as instructors.
Step-by-step explanation:
You want to find what 75% OF 300 is, therefore multiplication will be required in this problem. First you want to convert 75% to a decimal which you could do by just bringing the decimal point to the left twice. which will give you the decimal 0.75.
Now multiply. 0.75*300=225. There are 225 employees that work as instructors.