160/4 = p/6
Cross-multiply the propportion:
160 x 6 = 4p
Divide each side by 4:
p = 40 x 6 = 240 pages
Answer:
9.09090909091% decrease
Step-by-step explanation:
1 - 10/11 = 1/11 = 9.09090909091%
28 = k - 12
28 + 12 = k
40 = k
Hey there he went 80km because there's 4blocks and 20 minutes are 1/4 of 60 so 240km devided by 3
There is a formula for this
Time = [Worker 1 * Worker 2] / [Worker 1 + Worker 2]
Time = 30*40 / (30+40)
Time = 1,200 / 70
Time =
<span>
<span>
<span>
17.1428571429
</span>
</span>
</span>
minutes
Alternate method
In 1 minute, Mark can clean (1/30) of a room
In 1 minute, Lynn can clean (1/40) of a room
Together, they can clean (1/30 + 1/40) = (7 / 120) of a room in 1 minute.
Together, they can clean one room in (120 / 7) minutes.
(120 / 7) =
<span>
<span>
<span>
17.1428571429
</span>
</span>
</span>
minutes.
Source:
http://www.1728.org/work.htm