2006-10-08 19:09:21 · 9 answers · asked by bittuwas 1 in Science & Mathematics ➔ Mathematics
7*(21/4) = 36.75
so the answer is 36 because you can't make a fraction of a machine part.
2006-10-08 19:11:55 · answer #1 · answered by Bryan A 2 · 1⤊ 0⤋
At the same rate, 36.75 parts can he can make in 7 hour .
(After working 4 hours, frank has made 21 machine parts.
After working 1 hours, frank can made (21/4) machine parts.
After working 7 hours, frank can made 7*(21/4) machine parts.
7*(21/4)
=7*(7*3)/4
=49*3/4
=75% of 49
=49*75/100
=49*0.75
=36.75)
2006-10-09 04:12:44 · answer #2 · answered by Anonymous · 0⤊ 0⤋
4 hours = 21
7 hours = x
7 X 21 = 147
4 X x = 4x
147 = 4x
x = 36.75
OR
21 / 4 = 5.25
5.25 X 7 = 36.75
since you can't make 36.75 machine parts, it is rounded off to 36. Note that it rounds down, not up, as it is still 36.75, not 37, as 0.25 of the machine parts are not ready yet, therefore, you have to count the number of complete machine parts, which is 36. =)
2006-10-09 05:17:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Appx 37
2006-10-09 02:17:54 · answer #4 · answered by thrag 4 · 0⤊ 0⤋
36.75 machine parts
2006-10-09 02:21:59 · answer #5 · answered by Loving Angel 1 · 0⤊ 0⤋
Hopefully 37 or more!!!!
2006-10-09 02:18:28 · answer #6 · answered by Anonymous · 0⤊ 0⤋
thirty seven
2006-10-09 02:20:34 · answer #7 · answered by Mike H 2 · 0⤊ 0⤋
36.75
2006-10-09 03:29:41 · answer #8 · answered by Anonymous · 0⤊ 0⤋
36.75
2006-10-09 02:21:55 · answer #9 · answered by boom 1 · 0⤊ 0⤋