Question

How can you use proportional reasoning to determine the whole if you know that 21 is 60% of the whole

Answer 1

If 21 is 60% of the whole, you could find it:

40% of a whole is 2/3 of 60% (4/10 to 6/10 or 4/6)
Find 2/3 of 21 which is 14 then add them up to 35 which is the whole


I mean there’s gotta be a better way but yeah