Fran swims at a speed of 2.62.6 km/h in still water. The Lazy River flows at a speed of 0.30.3 km/h. How long will it take Fran to swim 88 km upstream? 88 km downstream?

Fran's upstream time =  37.93 hrs

Fran's downstream time =  30.13 hrs

Explanation:

given data

speed in still water = 2.62 km/h

River flows = 0.3 km/h

Fran to swim upstream =  88 km

solution

we will apply here distance formula that is

distance  = speed  × time   ...................1

put here value

so here

Fran's upstream speed = 2.62 km/h - 0.3 km/h  = 2.32 km/h

Fran's downstream speed = 2.62 km/h + 0.3 km/h = 2.92 km/h  

so

Fran's upstream time =  = 37.93 hrs

Fran's downstream time = = 30.13 hrs

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.