Currently, you have made 78, 83, and an 80 on your tests in math. What do you need to make on the next test in order to get an average of an 82?

The student's scores so far add up to 78+83+74+82 = 317

An average score of 80 over 5 tests adds up to 80+80+80+80+80 = 80*5 = 400

400 - 317 = 83

The student needs a score of 83.

87

Step-by-step explanation:

Mean(or average) = 82

let 'x' be the last test marks

Sum of marks of tests/Number of tests = Mean

(78 + 83 + 80 + x)/4 = 82

241 + x = 82 × 4

241 + x = 328

x = 328 - 241

x = 87

10 glasses of juice could be made with 5 carrots, 1,500 orange juice, 2,000 papaya juice.