Question: James is trying to create a new breed of kittens with extra-long tails. Each generation of kittens he breeds has a tail 25% longer than the last generation. If the first generation has tails 16 cm long, how long are the third generation's tails?
Answer with step-by-step thinking: First find how much longer the second generation's tails are: 25% * 16 cm = 4 cm. Then add that length to the first generation's tail length to find the second generation's tail length: 4 cm + 16 cm = 20 cm. Then find how much longer the third generation's tails are: 25% * 20 cm = 5 cm. Then add that length to the second generation's tail length to find the third generation's tail length: 5 cm + 20 cm = 25 cm.
So the answer is 25.


Question: Owen bought 12 boxes of face masks that cost $9 per box. Each box has 50 pieces of masks. He repacked 6 of these boxes and sold them for $5 per 25 pieces. He sold the remaining 300 face masks in baggies at the rate of 10 pieces of mask for $3. How much profit did he make?
Answer with step-by-step thinking: Owen bought 12 boxes for a total of $9 / box x 12 boxes = $108. Six boxes contains 6 boxes x 50 masks / box = 300 face masks. Owen made 300 masks / 25 masks / repack = 12 repacks. So, his revenue for selling those repacked face masks is $5 x 12 repacks = $60. There are 300 masks / 10 masks / baggy = 30 baggies face masks. So, his revenue for that is $3 / baggy x 30 baggies = $90. Hence, his total revenue for all the face masks is $60 + $90 = $150. This gives him a profit of $150 - $108 = $42.
So the answer is 42.


Question: Paula wants to ride the go-karts 1 time and the bumper cars 4 times. It costs 4 tickets to ride the go-karts and 5 tickets to ride the bumper cars. How many tickets does Paula need?
Answer with step-by-step thinking:
Paula wants to go on the go - kart 1 time and the bumper cars 4 times. The number of tickets needed for the go - karts is 1 × 4 = 4. The number of tickets needed for the bumper cars is 4 × 5 = 20. Paula needs 4 + 20 = 24 tickets.
So the answer is 24.