HardMath and Logic
Joey/Charlie share 50ml. Joey sips 1/2, Charlie 1/2 of rest, repeat...
Riddle
Joey/Charlie share 50ml. Joey sips 1/2, Charlie 1/2 of rest, repeat...
Choose an answer
A.25ml each
B.40ml and 10ml
C.30ml and 20ml
D.Joey: 33.3ml, Charlie: 16.6ml
Hint: It's a 4-word phrase with 15 letters, starting with "J".
Answer
Joey: 33.3ml, Charlie: 16.6ml
Why this is the answer
This forms a geometric series: Joey = 1/2 + 1/8 + 1/32... Charlie = 1/4 + 1/16 + 1/64... Summing them gives Joey 2/3 and Charlie 1/3 of the total.
This riddle is filed under Expert Riddles for Adults and rated Hard.
Related Riddles
HardAdults & Lateral-Thinking
I have a curly back end, communicate in any dialect, can say "aged" but not "wage." What am I?
HardAdults & Lateral-Thinking
Three men (Jack, James, Jim) and 5 hats (3 orange, 2 red). Jim knows his color. What is it?
HardAdults & Lateral-Thinking
Ben "was" the strongest man in the world but placed second in a contest. Why?
HardAdults & Lateral-Thinking