A chemistry teacher needs to make 10 liters of a 42% sulphuric acid solution. The acid solutions available are 50% sulphuric acid and 30% sulphuric ac' 1. How many liters of each solution must be mixed to make the 42% solution. please answer it would mean alot!!

42%

step-by-step explanation:

we know,

total people = 60

total males = 25

percentage of males

= 25/60 × 100

= 25/6 × 10

= 25/3 × 5

= 125 / 3

= 41.

rounding of = 42%

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option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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