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IBPS Clerk Prelims Model Paper 7

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Question : 2 of 100

Marks: +1, -0

\frac{3}{7}

\frac{4}{5}

\frac{5}{8}

of 490 = ?

115
105
108
116
None of these

Solution:

Concept:

The product of fractions can be simplified by cancelling common factors before multiplying.

Explanation:

Let the unknown value be

?

.

? = \frac{3}{7} \times \frac{4}{5} \times \frac{5}{8} \times 490

Cancel

5

from numerator and denominator.

? = \frac{3}{7} \times \frac{4}{8} \times 490

Simplify

\frac{4}{8}

to

\frac{1}{2}

.

? = \frac{3}{7} \times \frac{1}{2} \times 490

Now

\frac{490}{7} = 70

.

? = 3 \times \frac{1}{2} \times 70

? = 3 \times 35

? = 105

Answer:

105

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