Question 835564
You need to find the number of papers that
Booby delivered for Betty
In words:
( total amount that Bobby made ) / ( 10 cents / paper ) = number of papers he delivered
{{{ 780 / 10 = 78 }}} papers delivered
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Now what is Betty's pay for delivering the {{{ 78 }}} papers?
{{{ 25*78 = 1950 }}} cents
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Now what is the difference:
( Betty's pay ) - ( what she paid Bobby )
{{{ 1950 - 780 = 1170 }}}
Betty gets to keep $11.70 for the day
( notice that I did all calculations in cents until
the end when I converted to dollars )