Q: 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?
A: 86
Step-by-step reasoning process: 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.


Q: A school does a yearly tree planting activity. This year, the 4th graders planted a total of 30 trees while 5th graders planted twice as many. The 6th graders planted 30 fewer than thrice the number of trees planted by the 5th graders. How many trees did they plant altogether?
A: 240
Step-by-step reasoning process: The 5th graders planted 30 x 2 = 60 trees. Thrice the number of trees planted by the 5th graders is 60 x 3 = 180. So, the 6th graders planted 180 - 30 = 150 trees. Therefore, they planted a total of 30 + 60 + 150 = 240 trees.


Q: Toby’s father gave him $343 for passing the test. Toby decided to share it with his two brothers, so he gave each of them 1/7 of $343. How many dollars are left for Toby?
A: 245
Step-by-step reasoning process: Toby gave each of his brothers 1 / 7 * $343 = $49. Toby gave his 2 brothers a total of 2 * $49 = $98. So, Toby now has $343 – $98 = $245.


Q: A dietitian ate three-fourths of her lunch during her lunch break. If the total amount of food she had prepared for lunch had 40 calories, and the recommended calorie intake by the FDA is 25, how many more calories than the recommended amount did she eat?
A: 5
Step-by-step reasoning process: A dietitian ate three - fourths of her lunch during her lunch break, containing 3 / 4 * 40 = 30 calories. If the recommended calorie intake by the FDA is 25, the dietitian ate 30 - 25 = 5 more calories than the recommended amount.