+0  
 
0
46
1
avatar

A test is worth 100 points containing 38 problems. Each problem is either 2 points or 5 points. How many of each value are there?

 Jan 30, 2020
 #1
avatar+20254 
+1

f   = five point q's

t = two point qs      = 38 - f         

 

five point total will be     5f

two point total will be     2 (38-f)        summed together = 100 points

 

 

5f   +   2 (38-f)    = 100       solve for f , the number of 5 point q's     then the remaining questions,  the 2 pointers = 38-f

 Jan 30, 2020

14 Online Users