[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]: 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 hotel had operations expenses totaling $100. If the hotel received clients whose total payments for services offered totaled 3/4 of the cost of the operations, calculate the loss the hotel incurred.
[Answer]: The total payment from the clients who used the hotel's services is 3 / 4 * 100 = $75. The hotel incurred a loss of $100 - $75 = $25.
So the answer is 25.

[Question]: Cally and Danny washed their clothes. Cally has 10 white shirts, 5 colored shirts, 7 pairs of shorts, and 6 pairs of pants, while Danny has 6 white shirts, 8 colored shirts, 10 shorts, and 6 pairs of pants. How many clothes did they wash?
[Answer]:
They washed 10 + 6 = 16 white shirts. They washede 5 + 8 = 13 colored shirts. They washed 7 + 10 = 17 shorts. They washed 6 + 6 = 12 pants. Therefore, Cally and Danny washed a total of 16 + 13 + 17 + 12 = 58 clothes.
So the answer is 58.