For this case we have:
, we must run the decimal point 20 spaces to the left.

, we must run the decimal point 12 spaces to the left.

Thus, it is observed that the mass of a small virus is smaller!
We subtract and obtain:

ANswer:
The mass of a small virus is less!
2000 Pounds in a ton. 1.5 is 1 and a half. 2000/2 = 1000. 2000 + 1000 = 3000. 1.5 tons = 3k pounds. You reduce the weight of the car by 300 pounds. 3000 - 300 = 2700.
Your car weighs 2,700 pounds.
2,700 pounds is also equal to 1.35 tons
Answer:
The distance from Greentown to Glenavon is D1 = g*(15+x) miles downstream.
The distance from Glenavon to Cambria is D2 = g*(15-x) miles upstream.
The difference D1 - D2 is 2 miles, according to the condition.
It gives you an equation g*(15+x) - g*(15-x) = 2, which you can easily solve and find "x", the rate of the current. x = 1/g miles per hour.
Just add up all the numbers