I have $2,$5 and $10 notes in a ratio 3:10:5.After taking out 2/3 of the number of $2 notes and 16 of $5,i am left with $240.Find value of $10 saved.Any answer that is not related to the question will be reported as spam.
2007-03-03 18:03:04 · 4 answers · asked by Kenneth Koh 5 in Science & Mathematics ➔ Mathematics
Let say ratio 3:10:5 is ratio of value of $2, $5, $10 notes.
x = number of $2 notes
y = number of $5 notes
z = number of $10 notes
Compare $2 and $10
($2)x / ($10)z = 3/5
x = 3z ---(1)
Compare $5 and $10
($5)y / ($10)z = 10/5
y = 4z ---(2)
After taking 2/3 of number $2 and 16 of $ 5, left $240.
1/3 x ($2) + (y - 16) ($5) + z ($10) = $240
From (1) and (2)
1/3 (3z) ($2) + (4z - 16) ($5) + z ($10) = $240
2z + 20z - 80 + 10z = 240
z = 10
Value of $10 saved = 10 ($10) = $100
2007-03-03 18:39:30 · answer #1 · answered by seah 7 · 1⤊ 0⤋
$10
2007-03-03 18:21:31 · answer #2 · answered by Kate 2 · 0⤊ 0⤋
Find value of $10 saved? wouldnt that be 10 bux?
2007-03-03 18:11:24 · answer #3 · answered by vito b 3 · 0⤊ 0⤋
yeah, the value of $10 doesn't change. it's $10.
2007-03-03 18:15:53 · answer #4 · answered by pyro_bs6 2 · 0⤊ 0⤋