A typist types 45 words in 15 minutes and takes a 5-minute break to align

Question

A typist types 45 words in 15 minutes and takes a 5-minute break to align the paper. How many words will he type in one and half hours? [3 MARKS]

Options:

Answer: Option A
:

Steps: 2 Marks
Answer: 1 Mark
One and half hours = 60 + 30 = 90 min

In 15 minutes, he types 45 words
He takes 5 minutes of break to align the paper.
So, the total number of words typed by him in 20 minutes = 45
Now, 90=(20+20+20+20)+10

So, in 80 minutes he can type 45 × 4 = 180 words
The number of words he can type in the next 10 minutes= $\frac{45}{15} \times 10 = 30$

So, total number of words he will type = 180 + 30 = 210 words.

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