How many legs does a spider have if it has two times more than double the number of legs a human has?
Let's think: Since humans have two legs, we start by finding out what double that amount is by performing 2 * 2 = 4. Spiders have twice that number, so we multiply 4 * 2 to find 8 legs in total.. The answer is: 8.

Bryan bought three different bottles of milk. The bottles contain the following volumes of milk: 2 liters, 750 milliliters, 250 milliliters. How many liters of milk did Bryan buy in total?
Let's think: Bryan bought a total of 750 + 250 = 1000 milliliters of milk from the two smaller bottles. Since 1 liter is equal to 1000 milliliters, then 1000 milliliters is equal to 1000 / 1000 = 1 liter. Therefore, Bryan bought a total of 2 + 1 = 3 liters of milk.. The answer is: 3.

Fabian went to a park to get some fresh air. He decided to walk there for 3 hours. Every hour he covers 5 kilometers. How many more hours did Fabian need to walk to reach a total of 30 kilometers?
Let's think: To walk 30 kilometers, Fabian would need to walk for 30 km / 5 km / hour = 6 hours. As he had already walked for 3 hours, he would need to walk for another 6 hours - 3 hours = 3 hours.. The answer is: 3.

An archaeologist discovered three dig sites from different periods in one area. The archaeologist dated the first dig site as 352 years more recent than the second dig site. The third dig site was dated 3700 years older than the first dig site. The fourth dig site was twice as old as the third dig site. The archaeologist studied the fourth dig site's relics and gave the site a date of 8400 BC. What year did the archaeologist date the second dig site?
Let's think:
The third dig site was dated from the year 8400 / 2 = 4200 BC. Thus, the first dig site was dated from the year 4200 - 3700 = 500 BC. The second dig site was 352 years older, so it was dated from the year 500 + 352 = 852 BC.. The answer is: 852.