[Question]: A blind cave scorpion survives by catching millipedes. It needs to eat lots of millipedes to survive: a total of 800 body segments every day. If it's already eaten one millipede with 60 segments and 2 millipedes that are twice as long, how many 50-segment millipedes does it need to eat to reach its daily total?
[Answer]: First, the number of segments in the 2 millipedes that are twice as long is 60 segments * 2 = 120 segments. Then one can multiply the segments by the 2 millipedes to find the total number of segments: 120 segments / millipede * 2 millipedes = 240 segments. In total, we then find the scorpion has eaten one 60 - segment millipede in addition to the 3 millipedes above for a total of 60 + 240 = 300 segments. So, the number of segments it still needs to eat are : 800 segments - 300 segments = 500 segments. Thus, it needs to eat an additional 500 segments / 50 segments / millipede = 10 millipedes.
So the answer is 10.

[Question]: Gondor is a technician, he earns $10 from repairing a phone and $20 from repairing a laptop. If he was able to repair 3 phones last Monday, 5 phones last Tuesday, 2 laptops on Wednesday, and 4 laptops last Thursday, how much does he earn in total?
[Answer]: Gondor was able to repair a total of 3 + 5 = 8 phones from Monday to Tuesday. And the total amount he earned is $10x8 = $80. He was able to repair a total of 2 + 4 = 6 laptops from Wednesday to Thursday. So, the total amount he earned is $20x6 = $120. Therefore, the total amount he earned is $120 + $80 = $200.
So the answer is 200.

[Question]: Alyssa and Chelsea jointly bought 40 candles to decorate their room. Alyssa used half of them, and Chelsea used 70% of the remaining candles. How many candles are there in the room now?
[Answer]:
Alyssa used half of the candles, which is 1 / 2 * 40 = 20 candles. The number of candles that remained is 40 - 20 = 20. Chelsea used 70% of the remaining candles, a total of 70 / 100 * 20 = 14 candles. The total number of candles in the room now is 40 - 20 - 14 = 6.
So the answer is 6.