B) Prabin types 765 words in 9 minutes. How many words would he typein

1.	B) Prabin types 765 words in 9 minutes. How many words would he typein half an hour? How long does he take to type 12,750 words at the samespeed?
Answer» Step-by-step explanation: 765 words in 9 MINUTES. Then , Prabin TYPES 765/9 i.e, 85 words in ONE minute. Therefore in 30 minutes prabin will TYPE 30 X 85 i.e., 2550 words. Again, he types 1 word in 9/765 minutes. Therefore , he will type 12750 words in 12750 x (9/765) minutes, i.e, 150 minutes. Hence he will take two and a half hour.

B) Prabin types 765 words in 9 minutes. How many words would he typein half an hour? How long does he take to type 12,750 words at the samespeed?

Answer»

Step-by-step explanation:

765 words in 9 MINUTES. Then ,

Prabin TYPES 765/9 i.e, 85 words in ONE minute.

Therefore in 30 minutes prabin will TYPE 30 X 85 i.e., 2550 words.

Again, he types 1 word in 9/765 minutes.

Therefore , he will type 12750 words in 12750 x (9/765) minutes, i.e, 150 minutes.

Hence he will take two and a half hour.