Asold a commodity to b at 10% profit b again sold it to a at 10% loss. what does a have

Let's answer this step-by-step.

First of all, let's estsblish the original price of the commodity as being 100%. Therefore:

Original price of commodity = 100%

Then, when A sold the commodity to B, it was sold at a 10% profit. Therefore:

Price of commidity when A sold to B:
100% x 1.1 = 110%

After that, when B sold it back to A, it was sold at a 10% loss. Therefore:

Price of commodity when B sold to A:
110% x 0.9 = 99%

Hence, A now has 99% of the original value of the commidity.

45.7 Degrees Fahrenheit.
Since the temperature lowers by 1.1 degrees F every 1000 feet, the temperature will drop 8 times the amount of 1.1 degrees since the plane will reach 8,000 feet above ground assuming it starts at ground level, so 8*1.1=8.8 so we then can subtract 8.8 degrees from the starting temperature of 54.5 since the temperature would be dropping instead of rising, which then would give you 54.5-8.8=45.7