Question

A workshop was organised at KV no 1 Salt Lake, Kolkata. The number of participants were 10 more than 8 times the number of mentors and the total strength in the conference hall was 100.
3.1. Find the number of mentors in the conference hall?
3.2. Tea and snacks were being served during the breaks, costing Rs 25 per person per break. What would be the total cost incurred during 3-day workshop with 2 breaks each day, excluding mentors.
3.3. The conference hall was rectangular in shape with length being 5 times than that of the breadth. If total area covered was 125 square meter then what were the exact dimensions of the floor of the hall?
3.4. For seating arrangement of the participants in the hall, how many chairs are needed in each row such that the number of rows is a perfect square number?

Answer 1

Answer:

If no of mentor=X

then no of participants=8X+10

Total members = 8X+10+X=9X+10=100

X=10=no of mentor

no of participants=90

3.2 Total 6 breaks in 3days.

per participant cost=25x6=150

total cost = 90x150=13500

3.3 if breadth=x, length is 5x,

total area =5x^2=125

x=5=breadth

length=25 MTR

3.4 10chairs

Answer 2

Step-by-step explanation:

3.1 10

3.2 13500

3.3 breath=5 , length=25

3.4 10