Question

pls ans................​

Answer 1

Step-by-step explanation:

i hope it is helpful for u

Answer 2

Given:

• Average score of p students is 70.
• Average score of n students is 92.

To find: We have to find the value of p/n.

Solution:

• Total scores of p students is 70p.
• Total scores of n students is 92n.

∴ total scores of (p + n) students is (70p + 92n).

Also given,

average score of (p + n) students is 86.

⇒ (70p + 92n) / (p + n) = 86

⇒ 70p + 92n = 86n + 86p

⇒ 86p - 70p = 92n - 86n

⇒ 16p = 8n

⇒ p/n = 8/16

⇒ p/n = 3/8

Answer: p/n = 3/8 .