SOLUTION: Q.1 If a:m=5:8 and m:d=7:14 then a:d will be....? Q.2 A pipe fill tank in 5 mins, B fill in 6 mins. Both will fill in mins...?(by working at same time)

Question 291044: Q.1 If a:m=5:8 and m:d=7:14 then a:d will be....?
Q.2 A pipe fill tank in 5 mins, B fill in 6 mins. Both will fill in mins...?(by working at same time)
Found 2 solutions by Greenfinch, richwmiller:
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
a:m = 5:8, m:d = 7:14 = 1:2
a:d is thus 5:8:(8x2) or 5:16
A fills 1/5 per min, B fills 1/6 per min. Together, they fill at 1/5 + 1/6
So 6 + 5 over 30 = 11/30ths per min. Time is thus 30/11 = 2 8/11 mins
Roughly 2 mins 44 secs
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Some website rules you won't like:
You are limited to one problem per submission. [One problem at a time.]
No more than 4 submissions daily. [4 problems a day]
No similar problems. [Different type problems only.]
RELATED QUESTIONS
One pipe can fill a tank three times faster than the other pipe.If together the two pipes (answered by Alan3354)
please help with this word problem I am having trouble understanding where to start... (answered by stanbon)
a cooling tank can be filled by 1 pipe in 24 mins. and by the another pipe in 30 mins.how (answered by stanbon)
A tap can fill a tank in 6 mins and another can fill the same tank in 8 mins .How long... (answered by Theo,Fombitz,Edwin McCravy)
One pipe can fill a tank in 30 mins but a second pipe can fill it in 25 mins. How long... (answered by nerdybill)
One pipe can fill a tank in 45 mins. and another pipe can fill it in 30 mins. If these... (answered by ikleyn)
an empty tank can be filled with water in 20 mins using Pipe A or in 30 mins by Pipe B... (answered by mananth)
Two pipes can together fill a tank in 40/13 mins. If one pipe takes 3 mins more than the... (answered by ankor@dixie-net.com)
A tap can fill a tank in 6 mins and another can fill the same tank for 8 mins. How long... (answered by Fombitz)