40 Years in the Wilderness...?
40 Years in the Wilderness...?
40 Years for Ruby Wedding Anniversary?
40
W goes into Y: y ÷ W = Y/W times.
W goes into Y: y ÷ W = Y/W times.
if x + y = w, then x = w - y
Writing W/Y, as a decimal requires information about W and Y.
w=x-y w+y=x
x - y = w Add y to both sides: x = w + y
Y = 10x 10x = 40 y = 40
We can't without knowing the value of w. If w is a factor of 40, the LCM is 40. If w is a multiple of 40, the LCM is w. If w and 40 are relatively prime, the LCM is their product. There are other possibilities.
This question can be rephrased as, "If (v+w+x+y+z)/5=20, then for what value of z does (v+w+x+y)/4=15?". Thus, z is "the missing number." Let's solve for v+w+x+y in both equations. In the first equation, v+w+x+y=(20)(5)-z=100-z. In the second equation, v+w+x+y=(15)(4)=60. So 100-z=60. z=40. That's it! The missing number is 40!