Question

explain me properly plz I am in a hurry​

Answer 1

Answer:

(1) 5.25 hr.

Step-by-step explanation:

He collected 49 stubs so number of cigarettes are 7 as one cigarette needs 7 stubs.

Now, he took 3/4 hr to smoke a cigarette. So, to smoke 7 cigarettes, he needs

$\frac{3}{4} hours \times 7 = \frac{21}{4} \\ = 5.25 \: hours$

Answer 2

Answer:

Step-by-step explanation:

See they are saying that a person's cigarette have finished. He says that 7 stubs (leftover part of cigarette) can make a cigarette. Suppose he has 49 stubs. So he can make 7 cigarettes.

He takes 45 minutes to finish a cigarette. So he would take 5.25 hours for the cigarettes he has produced, now after he has finished all he again gets 7 stubs from the cigarettes. He makes a cigarette and thus, it takes him 6 hours.

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Yashasvika

Class7