Three students guess the number of jelly beans in a jar. Kyle guessed 545, Franco guessed 475, and Suzi guessed 490. One was wrong by 25, another by 30, and another by 40. How many jelly beans were there in the jar.
Why must he know this... do not ask me. Please show your work for this question and give your answer. Thankyou so much!
2007-05-22 05:20:19 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
515
2007-05-22 05:23:41 · answer #1 · answered by gartfield72 2 · 0⤊ 0⤋
The difference between the lowest guess and the highest guess is 545-475 = 70, which is the sum of 30 and 40, so the answer lies between these two, at either 505 or 515.
490 + 25 = 515, so that is the correct number of jellybeans.
2007-05-22 12:26:16 · answer #2 · answered by TychaBrahe 7 · 0⤊ 0⤋
By trial and error and a little logic, the number 515 comes to mind.
2007-05-22 12:26:22 · answer #3 · answered by Anonymous · 0⤊ 0⤋