Norah bought 2 bottles of water, each with a capacity of 500ml. After Norah and her sister each drank 𝑧 ml from the bottles, they have total of 340 ml of water left. Find 𝑧.

Hindi ko alam

The equation is:

2(500) - 𝑧 = 340

We simplify:

1000 - 𝑧 = 340

Subtracting 1000 from both sides:

-𝑧 = -660

Dividing both sides by -1:

𝑧 = 660

Therefore, Norah and her sister each drank 660 ml from the two bottles.

To find the value of z, we need to set up an equation based on the given information.

First, let's calculate the initial total volume of water in the bottles:
Total volume = 2 bottles * 500 ml/bottle = 1000 ml

Next, let's calculate the total volume of water after Norah and her sister each drank 𝑧 ml from the bottles:
Final volume = Total volume - 2z ml
Final volume = 1000 ml - 2z ml

According to the question, the final volume of water is 340 ml. So we can set up the equation:
Final volume = 340 ml
1000 ml - 2z ml = 340 ml

To find the value of z, we can solve this equation:
2z ml = 1000 ml - 340 ml
2z ml = 660 ml

Dividing both sides of the equation by 2, we get:
z ml = 660 ml / 2
z ml = 330 ml

Therefore, 𝑧 = 330 ml.

Do they have 340 left in each bottle or 340 left total?

2(500) - 340 = z

Calculate z from above equation.