Question

please answer class-7​

Answer 1

Step-by-step explanation:

a) 6×5 =30 feet.

b)6×(5-2)=6×3=18 feet

Answer 2

Step-by-step explanation:

a). Rohan in 3rd circle

Hence his distance from counter would be governed by this formula (n-1)*6 + 2.

Here n = 3 ( Rohan is in 3rd circle)

Rohan's distance is 14 feet

Rohan's friend is 5 circles behind him, i.e 8th circle

Put n = 8 we get (8-1)*6 + 2 = 44 feet

b). Rohan moves back 2 circles hence he is at n1 = 5

His friend is at n2 = 8.

Rohan's distance = (5-1)*6+2

Friend's distance = (8-1)*6+2

Substracting both, you'll get 2 cancelled

(8-1-5+1)*6

3*6 = 18 feet