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3 years ago

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Mathematics

1 answer:

DochEvi [55]3 years ago

7 0

4. 3(3) + 2
(3 x 3) + 2 = 11
5. -(-6) -7
(+)6 -7 = -1

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3 years ago

I WILL GIVE BRAINLIEST IF YOUR ANSWER IS CORRECT

telo118 [61]

Answer:

1. 4.5 g

2. 56.25 g

Step-by-step explanation:

3 % substance solution means :

3 g of dry substance is present in 100 g of solution.

By unitary method:

The weight of dry substance in 1 g of solution = $\frac{3}{100}$

The weight of dry substance in 150 g of solution = $\frac{3}{100}\times150=4.5\ g$

Let the weight of solution be w.

8 % solution contains 8 g dry substance in 100 g.

We have to find the weight of the solution(w) which contains 4.5 g of dry substance.

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4 years ago