Question

Chitra's water bottle is 8/9 full . She drinks some water and now it is 1/2 full. How much water she had to drink

Answer 1

If Chitra drinks some water from 8/9 of water and now the bottle is 1/2 full, then she had to drink 7/18 of water.

Step-by-step explanation:

Amount of water in Chitra’s bottle = $\frac{8}{9}$

After she drank some of the water from the bottle, amount of water left in the bottle = ½  

Let the amount of water she drank be denoted as “x”.

According to the question we can write the equation as,

$\frac{8}{9}$ – x = $\frac{1}{2}$  

⇒ [8 – 9x] = 9/2

⇒ 16 – 18x = 9  

⇒ 18x = 7  

⇒ x = $\frac{7}{18}$

Thus, Chitra had to drink $\frac{7}{18}$ of water from the bottle.

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