Question

Mark gave 21 tadpoles to his threes friends . Mark gave twice as many tadpoles to David as his did Chris . George received twice as many tadpoles as David . How many tadpoles did each friend receive?

Answer 1

so Chris would have 1x, David would have 2x, and George would have 4x, so add them together and get 7x, so you divide by 7 and that's 3=x so Chris would have 3, David would have 6, and George would have 12

Answer 2

first you need to fined what numbers you need to use.

next you need to do 21×3=63

(if you need) divide 3÷63=21
so that is how you know if its right