Question

Robert is paid $12.00 per hour to chop firewood he chops 40% of the pile of firewood in 3/4 of an hour at this rate how much will Robert be paid to chop the entire pile of firewood?

Answer 1

Robert chops 40% of the pile of firewood in 3/4 of an hour.

Then, we would chop 80% of the pile of firewood in 2*(3/4)=3/2 hours.

where 3/2 = 1.5 hours

Also, he would chop the missing 20% in (3/4)/2=3/8.

The full work is for 3/8+3/2 =15/8 hours

Now, if one hour is paid $12.00, we can use the rule of three to know how much is paid for 15/8 hours:

1h-----------$12.00

15/8 h -------- $x

where x=(12.00*5/8)/1

x=22.50

Hence, Robert will be paid $22.50 to chop the entire pile of firewood.