Question

Out of 1,200 people, 800 know only English, 50 know only Punjabi and the rest
know both languages. Find the per cent of
(a) people who know only English.
(b) people who know both English and Punjabi
​

Answer 1

Answer:

Total number of people = 1200

People know English = 800

People know Punjabi = 50

a) Find the percentage of people who know only English :-

= \frac{People \: \: know \: \: English}{Total \: \: number \: \: of \: \: people} \times 100\% \\ \\ = \frac{800}{1200} \times 100\% \\ \\ = \frac{80000}{1200} \% = 66.67\%(approx.)

Hence,

66.67 % people know only English.

Find the number of people who know both languages :-

Total number of people - (people know English + people know Punjabi)

= 1200 - (800 + 50)

= 1200 - 850

= 350

Find the percentage of people who know both English and Punjabi :-

= \frac{350}{1200} \times 100\% \\ \\ = \frac{35000}{1200} \% = 29.16 \% (approx)

Hence,

The percentage of people who know both English and Punjabi = 29.16 %

Answer 2

Answer:

Your Answer my dear friend

Q1. - 800 peoples

Q2. - 1200 - 850

= 350 peoples