Answer:
There are 7 milliliters of water in each of the first 7 beakers
Explanation:
* At first lets read the problem
- There are 86 milliliters of water to pour into tiny beakers
- Jerry has 8 tiny beakers
- He pours same amount in seven of them
- He pours 16 milliliters in the 8th one
- we want to know how many milliliters in each of the 7 beakers
* Look to the attached drawing
- There are 8 shapes represent the tiny beakers
- Seven of them have same amount x
- The last one has amount 16 milliliters
- All of them have 86 milliliters
* Now lets write the steps to answer the problem
∵ The amount of water is 86 milliliters
∵ The 8th tiny beaker has 16 milliliters
∴ The amount of water in the 7 beakers = 86 - 16 = 70 milliliters
∵ Each one of the 7 beakers has x milliliters of water
∴ 7 × (x) = 70 ⇒ divide each side by 7
∴ x = 7 milliliters
* There are 7 milliliters of water in each of the first 7 beakers