Raymond buys bottles of water at $2.10 each and a large pizza at $12.99. The total cost was $21.39. How many bottles of water b did he buy?
solve for b in
12.99 + 2.10b = 21.39
Thank You!
To find the number of bottles of water Raymond bought, we need to set up an equation based on the given information.
Let's assume Raymond bought 'b' bottles of water.
The cost of each bottle of water is $2.10, so the cost of 'b' bottles of water would be 2.10 * b = $2.10b.
The cost of the pizza is $12.99.
The total cost of the bottles of water and the pizza is given as $21.39.
So, the equation becomes: 2.10b + 12.99 = 21.39.
Now, we can solve this equation to find the value of 'b.'
2.10b + 12.99 = 21.39
Subtract 12.99 from both sides of the equation:
2.10b = 21.39 - 12.99
2.10b = 8.40
Divide both sides of the equation by 2.10:
b = 8.40 / 2.10
b = 4
Therefore, Raymond bought 4 bottles of water.