Question

The area At (in hectare) affected by locust attack is growing as per
At = 100 x 20.5t
where t is the time in hours. How long (in hours) will it take for the affected area
to be exactly equal to 1600 hectare?​

Answer 1

Step-by-step explanation:

100m=1 hectare

Given: area(A)= 100 hectare

time(t)= 20.5s

i.e., 100 hectare is affected in 20.5s

Therefore,1 hectare will be affected in 20.5/100

This implies 1600 hectare will be affected in 20.5 ×1600 ÷ 100=328 s

=328/60 mins

=5.46 mins