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The cost of 35 envelops is Rs.105.How many envelops can be bought for Rs.90?

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answer is A.

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Detailed Solution

Concept- To determine the number of envelopes that can be purchased, use the unitary method.
Given, the cost of

envelopes is Rs

.
This means we can purchase 35 envelopes for Rs.

.
Using the unitary method, in Rs.

, we can buy

envelopes.
Find the number of envelopes that can be purchased in Rs

,
In Rs

, we can buy

envelope.
We'll now calculate the number of envelopes that can be purchased for Rs

,
In Rs.

, we can buy

envelope.
Simplify the fraction,
In Rs.

we can buy

envelopes.
Therefore, for Rs.

envelopes can be purchased
Hence, the correct option is 1.

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The cost of 35 envelops is Rs.105.How many envelops can be bought for Rs.90?

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