A bat and a ball!
Algebra
Level
2
A bat and ball cost $1.10.
The bat costs one dollar more than the ball.
How much does the ball cost?
Write the value in dollars not cents
The answer is 0.05.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
let x=bat and y=ball, then we have the two equations
x + y = 1.10 (eq. 1)
x = 1 + y (eq. 2)
substitute (eq. 2) in (eq. 1), we have
1 + y + y = 1.10
2y = 0.10
y = 0.10/2 = 0.05 dollars