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Tutor profile: Rathna V.

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Rathna V.
1st year medical student
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Questions

Subject: TOEFL

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Question:

In the following sentence, the word "bare" means closest to "Under the dripping bare lilac-trees, a large open car was coming up the drive." (This sentence is taken from Scott Fitzgerald's "The Great Gatsby") A) uncovered B) unclothed C) scantily supplied

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Rathna V.
Answer:

The answer is A - uncovered because the tree is not covered by any flowers or leaves. The tree is unclothed not is it scantily supplied with flowers or leaves.

Subject: SAT II Biology E/M

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Question:

What is the type of bond formed by the nitrogenous bases in a nucleotide? and How many of these bonds are present when a cytosine molecule binds to a guanine molecule and when an​ adenosine molecule binds to a thymine molecule?

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Rathna V.
Answer:

Hydrogen bond formed. Between C and G there are 3 hydrogen bonds and between A and T there are 2 hydrogen bonds

Subject: Basic Math

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Question:

John has a fruit shop. He buys apples at $1.25 from the wholesale market and sells them at $1.35 at his store. i)By what percentage has the Apple's price been increased. ii) If he sells 30 apples that day, how much money will he earn and How many apples can he buy for the next day after saving 10% of his earnings.

Inactive
Rathna V.
Answer:

i)We first have to calculate the difference between the cost and selling price: $1.35 - $1.25 = $0.10. The difference divided by the original gives us the answer. So 0.10/1.25 x by 100 = 8%. ii) 30 x $1.35 = $40.5 (his total earning that day from selling apples) 10% of total earning = 0.10 x 40.5 = $4.05 to find out how much money he can use for buying apples the next day, we must subtract the 10% from the total earnings. $40.5 - $4.05 = $36.45 to find out the number of apples he can buy, divide $36.45 by the cost price of apples($1.25) = 29.16 apples, to the nearest round number, 29 apples.

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