Question: Lyka wants to buy a smartphone worth $160 but she only has $40 at the moment. She plans to save an equal amount of money per week for two months for the remaining amount that she needs. How much should she save per week?
Answer with step-by-step thinking: Lyka has to save a total of $160 - $40 = $120 for two months. There are 2 x 4 = 8 weeks in two months. Hence, Lyka needs to save $120 / 8 = $15 per week.
So the answer is 15.

Question: Socorro is preparing for a math contest. She needs to train for a total of 5 hours. Each day, she answers problems about multiplication for 10 minutes and then division problems for 20 minutes. How many days will it take for her to complete her training?
Answer with step-by-step thinking: Socorro trains for a total of 10 + 20 = 30 minutes each day. She needs to train for a total of 5 x 60 = 300 minutes since an hour has 60 minutes. Therefore, she will complete her training in 300 / 30 = 10 days.
So the answer is 10.

Question: A cafe has 9 indoor tables and 11 outdoor tables. Each indoor table has 10 chairs, and each outdoor table has 3 chairs. How many chairs are there in all?
Answer with step-by-step thinking:
There are 9 indoor tables * 10 chairs = 90 chairs. There are 11 outdoor tables * 3 chairs = 33 chairs. The total number of chairs is 90 chairs + 33 chairs = 123 chairs.
So the answer is 123.