Train a has a speed 20 miles per hour greater than that of train b. if train a travels 320 miles in the same times train b travels 280 miles, what are the speeds of the two trains?

Step-by-step explanation:

The difference in distance traveled is 40 miles, so each train must have traveled 2 hours.

Train A speed = (320 mi)/(2 h) = 160 mi/h

Train B speed = (280 mi)/(2 h) = 140 mi/h

The difference in speed means Train A gains on Train B by 20 miles each hour. After 2 hours, it will have gone 40 miles farther.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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step-by-step explanation: