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Q.

If Rs. 2800 is $\frac{2}{7}$ percent of the value of a house then worth of the house in (Rs.) is?

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a

8,00,000

b

9,80,000

c

10,00,000

d

12,00,000

answer is B.

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Detailed Solution

Concept- The units of two quantities must match in order to compare them. When two ratios are converted into like fractions, they can be compared. We say that the two specified ratios are equivalent if the two fractions are equal. Four quantities are said to be in proportion if two ratios are equivalent (or equal).
Assuming that the worth of a house is x, and that 27 percent of that value is equal to Rs. 2800, we can express this assertion as

\frac{2}{7}

(\frac{1}{100}) x = 2800

. To get the value of x solve this equation. We can determine the house's value by finding the value of

x

.
Assume the house is worth Rs x.
Given that

\frac{2}{7}

of a house's value is equal to Rs. 2800, we may write this assertion mathematically as follows:

\frac{2}{7}

(\frac{1}{100}) x = 2800

____(1)
700 multiplied by both sides gives us-

2 x = 2800 (700)

x = \frac{2800 (700)}{2}

x = \frac{1960000}{2}

x = 9, 80, 000

Hence, the correct answer is option 2) 980000.

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