susan had some money. she spent 1/6 of her money on saturday. on sunday, she spent 1/2 of the remaining money and gave $20 to her niece. she spent the rest of h
Matematika
jesiccabetriciah
Pertanyaan
susan had some money. she spent 1/6 of her money on saturday. on sunday, she spent 1/2 of the remaining money and gave $20 to her niece. she spent the rest of her money at an average of $15 for the next 5 days. how much money did Susan have at first?
1 Jawaban
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1. Jawaban Eipies
s/6 + (5s/6)/2 + 20 + 5(15) = s
s/6 + 5s/12 + 95 = s
(2s+5s)/12 -s = -95
7s/12 -s = -95
(7s-12s)/12 = -95
-5s/12 = -95
-5s = -1140
s = 228.
semoga bermanfaat.