Martin went on an eight-hour business trip. During the first half of the trip, he traveled at a speed of 70 kilometers per hour and during the second half at a speed of 85 kilometers per hour. How many kilometers did he travel during the journey?
Let's think: Half of the trip lasts for 8 * 0.5 = 4 hours. During the first half, Martin did 4 * 70 = 280 kilometers. And during the second half 4 * 85 = 340 kilometers. In total Martin traveled 280 + 340 = 620 kilometers during his business trip.. The answer is: 620.

Vaishali wears a beautiful piece of clothing called a Saree, a traditional Indian dress for women. It is mostly tangerine-colored, with blue, brown, and gold-colored decorative stripes. There are three times as many gold stripes as brown stripes, and five times as many blue stripes as gold stripes. If there are 4 brown stripes, how many blue stripes does Vaishali's Saree have?
Let's think: With 3 times as many gold stripes as brown stripes, this means there are 3 * 4 = 12 gold stripes. With five times as many blue stripes as gold stripes, this means there are 5 * 12 = 60 blue stripes.. The answer is: 60.

Every day Janet spends 8 minutes looking for her keys and another 3 minutes complaining after she finds them. If Janet stops losing her keys, how many minutes will she save every week?
Let's think: First find the total time Janet spends looking for her key and complaining each day: 8 minutes / day + 3 minutes / day = 11 minutes / day. Then multiply that number by the number of days in a week to find the weekly time spent: 11 minutes / day * 7 days / week = 77 minutes.. The answer is: 77.

Caleb is baking a birthday cake for his grandfather. His grandfather is turning 79 years old. Caleb puts three colors of candles on the cake. He puts one candle for each year for his grandfather. He puts 27 yellow candles, 14 red candles and the rest are blue candles. How many blue candles did he use?
Let's think:
Caleb has put 27 + 14 = 41 yellow and red candles. So, he used 79 - 41 = 38 blue candles.. The answer is: 38.