The 100 Years War
1
To find what percent of W is Y, you would use the formula: (Y / W) × 100. This calculation gives you the percentage of Y in relation to W. For example, if W is 50 and Y is 10, then (10 / 50) × 100 = 20%, meaning Y is 20% of W.
100 years war
100 Years' War
404
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
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!