On Friday Adriana earns half as much as she did on Thursday. On Saturday she earns twice as much as she did on Thursday, if her total for 3 days is $63.00 how much did she earn each day?
Adriana might keep a record of her daily ernings in a table like the one below.
Friday is the day she earned the least (Thursday she earned twice as much as Friday and Saturday she eared twice as much as Thursday) so let the amount she earned on Friday be x dollars. Enter it in the record sheet.
Thursday she made twice what she made on Friday so enter it in the record sheet.
On Saturday she made twice what she made on Thursday, that is 2(2x) = 4x dollars. Thus her completed record sheet would be:
But the column of earnings totals $63.00, thus 2x + x + 4x = $63.00, that is 7x = $63.00. Hence x = $9.00.Cheers,