Yes, borh ratios when reduced are 5:2. 30:12 is 5:2 because both are divisible by 6. 30/6=5 and 12/6=2. 40:16 is 5:2 because both are divisible by 8, 40/8=5 and 16/8=2
R(B+T)=E because you first have to add T to both sides then multiply R to cancel out the division sign
Your answer is 8500 because 850 times 10 equals 8500
Using proportions, considering the income tax of 10%, you actually earn $1,215 a month.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
For people earnings less than $19,000 a year, the income tax is of 10%, hence the amount you actually earn is given by:
A = 0.9 x 1350 = $1,215 a month.
More can be learned about proportions at brainly.com/question/24372153
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