In an effort to reduce her monthly cell phone bill, Hannah talked 50 fewer minutes this month than the previous month. If this represents 8% an reduction in talk time, how many minutes did Hannah talk on her cell phone the previous month?

Question

In an effort to reduce her monthly cell phone bill, Hannah talked 50  fewer minutes this month than the previous month. If this represents 8% an  reduction in talk time, how many minutes did Hannah talk on her cell phone the previous month?

anonymous · Answer

50 divided by 8 represents amt of minutes per 1%

So: 50/8 = 6.25 minutes per 1 %.

What do we need to do see how many minutes are in 100%?

anonymous · Answer

So she talked 625 minutes the previous month.   

Now to work it the other way, she's going to talk 50 fewer minutes the next month.  To find your percent reduction, just do:

((625-575)/625) *100% = 8% reduction.