Question

32. A box of twenty pens has an average cost of Rs. 22 per pen. There are eleven red pens
having an average cost equal to the average cost of the pens in the box. There are seven
blue pens having an average coast of Rs. 20 per pen. What is the average cost of the two
green pens?
A. Rs. 29
B. Rs. 25
CRs. 21
D. None of the above

Answer 1

Answer:

B.Rs.25

Step-by-step explanation:

find the probability by total number of pens by favorable outcomes you will get the answer