There were 40 club members at a party. Each brought 1 or 2 guests. In all, there were 100 people at the party. How many club members brought 2 guests?
please tell me how you get the asnwer
2006-10-19 09:06:26 · 6 answers · asked by watermel0nbabii 2 in Education & Reference ➔ Homework Help
Twenty club members brought two guests.
40 club members, each brought 1 or two guest, so start by if everyone brought 1 guest, then there are 80 people there. The difference between 100 and 80 is the number of people who brought two guests :)
2006-10-19 09:13:15 · answer #1 · answered by iggry 2 · 1⤊ 0⤋
100 at the party 40 members leaves 60 extra guests each brought at least one which means there are 20 extra which means 20 brought one guest and 20 brought two
20*1=20
20*2=40
+40 members=100
2006-10-19 09:41:41 · answer #2 · answered by Bobby B 4 · 0⤊ 0⤋
iggry's answer is a really good example of reasoniong it out.
It can also be solved with algebra:
Total members is 40, each of whom brought themselves and either 1 or two guests. The total number of people is 100. Let us call the number of members who brought themselves plus 2 guests "X" --
X*(1+2) + (40-X)*(1+1) = 100
X*3 + (40-X)*2 = 100
3X + 80 - 2X = 100
X = 20
So, 20 members brought themsleves plus two guests.
This means the other 20 members (40-X) brought themselves and one guest.
2006-10-19 09:24:07 · answer #3 · answered by Mustela Frenata 5 · 0⤊ 0⤋
20 people brought 2 guests
well there were 40 members then there were 100 people including the members
20*2=40
40+40+80
then the other 20 members each brought 1
2006-10-19 09:17:38 · answer #4 · answered by angelspice1995 2 · 0⤊ 1⤋
a million. sq. root of 128, so outcome might want to be 11.3 (the diagonal varieties a triangle with a ninety attitude with 2 aspects of the sq., so formula is sq. root of two*a*a, the position a is the length of a area) 2. be conscious a similar formula and verify (a*a+b*b=c*c, the position c is the area adversarial to the right attitude) 3. be conscious similar formula 4. draw a coordinates area on a chunk of paper or on a computer, then variety a accurate triangle, with the gap between both factors being your distance; be conscious formula above) 5. similar element "provide a guy a fish, and also you feed him for an afternoon. prepare him to fish, and also you feed him for an finished life."
2016-12-05 00:29:07 · answer #5 · answered by ? 4 · 0⤊ 0⤋
trick question 40 x 2 u cant get 100
2006-10-19 09:08:58 · answer #6 · answered by Anonymous · 0⤊ 2⤋