<PRE><B>Question 40222</B>

4 shovels of sand are used for every 5 shovels of gravel

4s : 5g


How many shovels of gravel are needed for 64 shovels of sand?
64s :  Xg


We need to calculate the value of X
4s : 5g
64s :  Xg


4s.Xg = 5g.64s
X = (5g*64s)/4sg


= 5*64/4
= 5*16
= 80


___80____shovels of gravel are needed.
    </PRE>