susan can type 10pages in 5 minutes.Mary can type 5 pages in 10minutes working together,how many pages can they type in 30minutes?

Option
a)42
b)64
c)75
d)51

• Together in 10 minutes they can type (10*2)+5 pages = 25pages
  so in 30 minutes they can type 25*3 = 75 pages
• 11 years agoHelpfull: Yes(20) No(0)
• susan: 5 min=10 pages
  thus,30 min=60 pages
  Mary: 10 min=5 pages
  thus,30 min=15 pages
  thus, total=75 pages
• 11 years agoHelpfull: Yes(9) No(0)
• SUSAN, 5mins-10pages so in 1 min 2 pages
  similarly, Mary 10 mins- 5 pages
  so, working together in 1 min 5/2 pages
  in 30 mins 75 pages
• 11 years agoHelpfull: Yes(6) No(0)
• susan can type 10 pages in 5 min ..so, he can type 20 pages in 10 min
  and on the other hand mary can type 5 pages in 10 min
  so, working together they can type 25(20+5)pages in 10 min
  therefore,in 30 mins they can type (25*3)=75 pages ans
• 11 years agoHelpfull: Yes(3) No(0)
• 10 pgs =5 mins susan; 30 mins=60
  5 pgs =10 mins marry;30 mins=15
  60+15=75
• 11 years agoHelpfull: Yes(2) No(0)
• susan: 10 pages in 5min that is 10/5
  mary: 5 pages in 10 min tha is 5/10
  both sitting together work as follows 10/5+5/10=25/10
  that means both can complete work as 25 pages in 10 min...so in 30min they complete 75 pages
• 11 years agoHelpfull: Yes(1) No(0)
• susan->10 pages->5 minutes
  mary->5 pages->10 minutes
  (susan->10pages->5 minutes)*2
  susan->20 pages in ->10 minute
  both can type 15 pages in 10 minutes
  so both can type 15*3 pages in 10*3 minutes
  ie 75 pages in 30 minutes
• 11 years agoHelpfull: Yes(1) No(0)
• 75 pages they can type
• 11 years agoHelpfull: Yes(1) No(0)
• 75 pages
• 11 years agoHelpfull: Yes(1) No(0)
• Susan's 1 min work = 2 pages
  Mary's 1 min work = 1/2 page
  Susan + Mary's 1 min work = 2+1/2 = 5/2
  so they work for 30 min ..their work = 5/2*30 = 75 pages..
• 11 years agoHelpfull: Yes(1) No(0)
• Together in 1 min they can type (10/5+5/10)pages= 2.5 pages
  so,in 30 min they can type (2.5*30)=75 pages
• 11 years agoHelpfull: Yes(1) No(0)
• 24 pages??
• 11 years agoHelpfull: Yes(0) No(6)
• They will type 15 pages !!!
• 11 years agoHelpfull: Yes(0) No(5)
• 75 pages in 30 minutes
  
• 11 years agoHelpfull: Yes(0) No(0)
• 10/5=2,5/10=0.5
  so,2*30+.5*30=60+15=75...
• 10 years agoHelpfull: Yes(0) No(0)