make an equation then solve it?
If it took 30 minutes to give out 75 diplomas last year, how long will it take to give diplomas to the 90 graduates this year?
2006-11-13 00:57:17 · 8 answers · asked by lisaloo22610 1 in Science & Mathematics ➔ Mathematics
to give 75 diplomas it takes 30 min
to give 90 diplomas it takes
90*30/75min
36min
2006-11-13 01:02:49 · answer #1 · answered by Dupinder jeet kaur k 2 · 0⤊ 0⤋
30 mins for 75 dips.
x mins for 90 dips.
=> 30*90 = x*75
=> 2700 = x*75
=> x = 2700*75
=> x = 36
2006-11-13 01:06:31 · answer #2 · answered by Paritosh Vasava 3 · 0⤊ 0⤋
75/30=2.5 diplomas/minute
90/2.5=36 min
2006-11-13 03:20:19 · answer #3 · answered by yupchagee 7 · 0⤊ 0⤋
30/75 = x/90
x = (30/75)(90) = 36 minutes
2006-11-13 01:04:02 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋
(90/75)(30)=6(30)/5=36
2006-11-13 01:23:20 · answer #5 · answered by albert 5 · 0⤊ 0⤋
75 in 30min
90 in ? min
?=30*90/75 = 36min
2006-11-13 01:00:29 · answer #6 · answered by . 3 · 0⤊ 0⤋
30 / 75 = x / 90
2700 = 75 x
36 = x
2006-11-13 01:34:52 · answer #7 · answered by C D 3 · 0⤊ 0⤋
36 mins at 0.4 mins per dipoma
2006-11-13 01:00:02 · answer #8 · answered by Anonymous · 0⤊ 0⤋