In 2009, john paid $7,890 in federal income tax. in 2010, he paid 50% less. how much did john pay in 2010?

answer: do we write it

step-by-step explanation:

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.