5 5 I think of a number, treble it then add on 3, the result is equal to 6. Find the value of the original number I thought of.
2 answers:
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I'm guessing you mean:
If not, correct me.
So, then the perimeter of a square is just 4*A, which in this case would be:
And that would be your answer:
units²
If not, correct me.
So, then the perimeter of a square is just 4*A, which in this case would be:
And that would be your answer:
Answer:
90 g of water should be added and he will make 900 g of solution.
Step-by-step explanation:
Let x g be the amount of salt Ilya add to 810g of water to make 10% solution. Then 810+x g is the amount of new solution. Thus,
810+x - 100%,
x - 10%.
Mathematically,
So 90 g of water should be added and he will make 810+90=900 g of solution.