<PRE><B>Question 247697</B>
Five friends went to a restaurant and agreed to share the bill equally.
 However, one person forgot his wallet so the other four friends’ portions of the bill went up by $4 each.
How many dollars was the total bill?
:
Let x = amt of the total bill
then
{{{x/5}}} = the share of each originally
and
{{{x/4}}} = the share actually
:
{{{x/4}}} - {{{x/5}}} = 4
Multiply by 20 to get rid of the denominators, results
5x - 4x = 20(4)
x = $80 is the total bill
;
:
Check:
80/4 = $20 each
80/5 = $16 each
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dif of  $4

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