Question: Lucy has $65 in the bank. She made a $15 deposit and then followed by a $4 withdrawal. What is Lucy's bank balance?
Answer with step-by-step thinking: Lucy had $65 + $15 = $80 after making a deposit. So, her bank balance is $80 - $4 = $76 after making a withdrawal.
So the answer is 76.


Question: There are 19 students in the 3rd grade and twice that number in the 4th grade. There are 10 boys and 19 girls in the 2nd grade. How many students are there in total?
Answer with step-by-step thinking: In the third grade, there are 19 students. In the fourth grade, there are 2 × 19 = 38 students. Counting the boys and girls in the second grade, there are 10 + 19 = 29. There are 19 + 38 + 29 = 86 students in total.
So the answer is 86.


Question: A clothing store has an inventory of 34 ties, 40 belts, 63 black shirts, and 42 white shirts. The number of jeans in the store is two-thirds of the sum of black and white shirts, and the number of scarves is half the number of the sum of ties and belts. How many more jeans are there than scarves?
Answer with step-by-step thinking:
The sum of black and white shirts is 63 + 42 = 105. The number of jeans in the store is (2 / 3) x 105 = 70. The sum of ties and belts is 34 + 40 = 74. The number of scarfs in the store is 74 / 2 = 37. There are 70 - 37 = 33 more jeans than scarfs in the store.
So the answer is 33.