Question

4. He takes 30 minutes to prepare 45 envelopes. If he continues at the same
rate, how many minutes will it take him to do 93 envelopes?

Answer 1

If he continues at the same  rate, it will take 62 minutes to do 93 envelopes.

• Let the first envelope be A.

• Let the second envelope be B.

Given the following data:

• Time A = 30 minutes

• Number of A = 45 envelopes

• Number of B = 93 envelopes

To find how many minutes it will take him to do envelope B, we would use direct proportion:

30 minutes = 45 envelopes

B minutes = 93 envelopes

Cross-multiplying, we have:

$93$ × $30 =$ $45$ × $B$

$2790 = 45X\\\\X = \frac{2790}{45}$

B = 62 minutes

Therefore, it will take 62 minutes to do envelope B.

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