Let the cost of one watermelon be 'x'.
Amount of money spent by William on vegetables = $45
Number of watermelons bought by William = 6
Amount left with William = $25.50
Equation will be,
45 - 6x = 25.50
Add -45 on both sides,
45- 45 - 6x = 25.50 -45
-6x = - 19.50
Divide both side by -6 to find the value of x
[tex] \frac{-6x}{-6}[/tex]= [tex]\frac{-19.50}{-6} [/tex]
x= [tex] \frac{-19.50}{-6} [/tex]
x = 3.25
So the cost of each watermelon is $3.25
