Question

At first, you have 15 bottles of coke, and you drink 2 bottles each day. After a certain number of days, there are 3 bottles left. Write and solve an equation for, d, when there are 3 bottles left?

Answer 1

To find the number of days it takes for there to be 3 bottles left, we set up the equation 15 - 2d = 3 and solve for d. The result is d = 6, so it takes 6 days.

Step-by-step explanation:

We can solve this problem by setting up an equation using the given information.

Let d represent the number of days it takes for the student to reach 3 bottles.

We start with 15 bottles and drink 2 bottles each day, so the equation is: 15 - 2d = 3

To solve for d, we isolate the variable by subtracting 15 from both sides: -2d = -12.

Finally, we divide both sides by -2 to solve for d: d = -12 / -2 = 6.

Therefore, it takes 6 days for there to be 3 bottles left.

Answer 2

After 6 days, 3 bottles will be left.

Step-by-step explanation:

Given that:

Number of bottles = 15

Number of bottles drank each day = 2

Let,

d be the number of days

y be the number of bottles left

y = 15 - 2d

Now,

We have to find the number of days when 3 bottles will be left.

Putting y=3

3 = 15 - 2d

2d = 15 - 3

2d = 12

Dividing both sides by 2

`(2d)/(2)=(12)/(2)\\d=6`

Hence,

After 6 days, 3 bottles will be left.