Answer this question:Emmanuel will stay in Guam in December for 10 days in which he has to use international data that would cost $3.50 per day. Emmanuel has been paying $175 per month for his regular plan. How much in all will be Emmanuel's charges for December?
The international charge cost $3.50 x 10 = 35. Therefore, Emmanuel's bill for December is $175 + 35 = $210.
The answer is 210.

Answer this question:A boy runs 1.5 km in 45 minutes. What is his speed in kilometers per hour?
Since 1 hour is equal to 60 minutes, then 45 minutes is equal to 45 / 60 = 0.75 hours. Then, the speed in kilometers per hour is 1.5 km / 0.75 hour = 2 kilometers per hour.
The answer is 2.

Answer this question:Lara bought 52 stems of flowers at the flower shop. She gave 15 flowers to her mom and gave 6 more flowers than she gave to her mom to her grandma. She put the rest in a vase. How many stems of flowers did Lara put in the vase?
Lara gave 15 + 6 = 21 stems of flowers to her grandma. She gave away 21 + 15 = 36 stems of flowers. Therefore, Lara put 52 - 36 = 16 stems of flowers in the vase.
The answer is 16.

Answer this question:Out of the 80 students who took the biology exam, only 2/5 of them managed to score 100%. If a score below 80% qualified as failing, and 50 percent of the remaining students who didn't score 100% managed to score over 80%, calculate the number of students who failed the exam.
The number of students who scored 100% is 2 / 5 * 80 = 32. Out of the 80 students, 80 - 32 = 48 did not score 100%. If 50% of the students who did not score 100% managed to score over 80%, then 50 / 100 * 48 = 24 students scored over 80%. The number of students who failed is 48 - 24 = 24.
The answer is 24.