Question

a solution should contain 2 onces of cemical for every 7 once of water. how much cemical should be added to 20 once of water to get the proper concentration.?

pls tell guys​

Answer 1

Answer:

It can be solved by equal proportionality theorem.

Step-by-step explanation:

Let amount of chemical be x.

2 : 7 : : x : 20

7x = 2 × 20

x = 40/7

x = 5.7 once