(a) 600 erasers
(b) 1800 pencils
Sam had 300 more pencils than erasers at first. After giving away 1/5 the
erasers and 5/6 of the pencils, he had 216 more erasers than pencils left.
(a) How many erasers did he have at first?
(b) How many pencils did he have at first?
2 answers
Looking at the bot's answer:
Didn't it say he had 300 more pencils than erasers?
but 1800 - 600 ≠ 300 !! So the bot's answer is wrong again.
Number of erasers ---- x
number of pencils ----- x + 300
after the giving he has:
number of erasers = 5x/6
number of pencils = (x+300)/6
erasers - pencils = 216
5x/6 - (x + 300)/6 = 216
times 6
5x - x - 300 = 1296
4x = 1596
x = 399
He had 399 erasers and 699 pencils
I think there is a flaw in the question, since you cannot get a whole
number of 5x/6
Didn't it say he had 300 more pencils than erasers?
but 1800 - 600 ≠ 300 !! So the bot's answer is wrong again.
Number of erasers ---- x
number of pencils ----- x + 300
after the giving he has:
number of erasers = 5x/6
number of pencils = (x+300)/6
erasers - pencils = 216
5x/6 - (x + 300)/6 = 216
times 6
5x - x - 300 = 1296
4x = 1596
x = 399
He had 399 erasers and 699 pencils
I think there is a flaw in the question, since you cannot get a whole
number of 5x/6
1 answer