Answer:
Number of tadpoles Chris has = 3
Number of tadpoles David has = 6
Number of tadpoles George has = 12
Step-by-step explanation:
Given: Total number of tadpoles divided among 3 friends = 21
Number of tadpoles Mark gave to Chris = A
Number of tadpoles Mark gave to David = B = 2A
Number of tadpoles Mark gave to George = C = 2B = 2(2A) = 4A
∴ Total number of tadpoles = A + B + C
⇒ 21 = A + 2A + 4A
⇒ 21 = 7A
⇒ A = 21 ÷ 7 = 3
∴ Number of tadpoles Chris has = A = 3
Number of tadpoles David has = B = 2A = 2(3) = 6
Number of tadpoles George has = C = 2B = 2(2A) = 4A = 4(3) = 12
Replace x with the possible answers and solve to see which ones make the equation true:
5(3) = 15 + 4 = 19. 19 is < 29 so 3 works.
5(4) = 20 + 4 = 24. 24 is < 29, so 4 also works.
5(5) = 25 + 4 = 29. 29 is not less than 29 so doesn't work.
Only 3 and 4 will work.
The answer would be {3,4}
Answer:
556
Step-by-step explanation:
Answer:
A maximum of 43 students and 11 teachers can go to the trip.
Step-by-step explanation:
Since a group of teachers and students will take a bus trip to a museum, and each teacher will lead a group of no more than 4 students, and the bus can hold a maximum of 54 teachers and students, to determine the possible numbers of teachers and students who can go on the trip, the following calculation must be performed:
4 + 1 = 5
54/5 = X
10.8 = X
10 x 4 = 40
10 x 1 = 10
4 - 1 = 3
Therefore, a maximum of 43 students and 11 teachers can go to the trip.
