
PreCalculus PreCalculus Math Forum 
 LinkBack  Thread Tools  Display Modes 
November 15th, 2018, 09:38 AM  #11  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1039  Quote:
b = boys = 270, g = girls = 225 3/4 * b = 202.5, 5/6 * g = 187.5 : 202.5 + 187.5 = 390 The closest to 390 that will result in integer results is 364 and 416. 364: b = 252, g = 210 : 3/4 * 252 = 189, 5/6 * 210 = 175 : 189+175 = 364 416: b = 288, g = 240 : 3/4 * 288 = 216, 5/6 * 240 = 200 : 216+200 = 416  
November 15th, 2018, 10:45 AM  #12 
Member Joined: Aug 2018 From: Nigeria Posts: 73 Thanks: 2 
Please hint me on the others...

November 15th, 2018, 01:11 PM  #13 
Global Moderator Joined: Dec 2006 Posts: 21,036 Thanks: 2274 
2. Y takes 2 hours 30 minutes to reah P, so X takes 2 hours 5 minutes to reach P. Hence X has an average speed of 72km/h. 3. In 6 days, they do 6/15 of the work, leaving 9/15 of the work to be done in 30 days by A. Hence A would need 30 × 15/9 days = 50 days to do the job on his own. 

Tags 
found, tough 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
I just found out this fun.  helen510  Elementary Math  7  March 30th, 2018 05:26 PM 
Oh yaa! Found it!!  Hardik  New Users  0  October 18th, 2015 10:06 AM 
Formulas for Pi I've found!  vittyvirus  Math  2  January 8th, 2015 11:06 AM 
How was the formula for kinetic energy found, and who found it?  Ganesh Ujwal  Physics  3  January 5th, 2015 01:58 AM 
My found integral vs Wolfram Alpha's found integral  Obsessed_Math  Calculus  4  February 9th, 2012 03:18 PM 