The cost of 20 envelopes is ₹50. How many envelopes can be purchased for

Question

The cost of 20 envelopes is ₹50. How many envelopes can be purchased for ₹10?

Options:

A . 1

B . 2

C . 3

D . 4

Answer: Option D
:
D
The cost of 20 envelopes = ₹50.

∴

The cost of one envelope

= \frac{50}{20}

= ₹ 2.5
One envelope costs ₹2.5.
So, for ₹10, the number of envelopes thatcan be purchased is equal to

\frac{10}{2.5} = 4

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