Ok, I have this Math problem and I need you to help me answer it.
Q: In a week, Peter gets twice as much pocket money as John, and George gets $3 less than Peter. Altogether the three boys get $17.
If John gets $x a week:
(a) Write down in terms of x
i) How much Peter gets a week.............................
ii) How much George gets a week.............................
(b) Write down the equation in x and solve it. Hence, work out how much each boy gets a week.
-Please help me answer this problem, I have 10 problems and I want you to please do this for me so that I can do the other 9 left. It will be my guide/example to solve the problems. Please help.. Thank you very much.
2006-11-25 06:53:24 · 6 answers · asked by Dubu 3 in Science & Mathematics ➔ Mathematics
hmm.. when i saw all your answers, i realize that it was easy to solve. omg, i'm so sorry to ask such a dumb question. i'm so dumb. T_T
but, thanks to all who answered this.. this helps me a lot.
i have 1 more problem.. "who will i choose as the best answer?" you're all correct.. hehehe..
2006-11-25 07:18:17 · update #1
OK.
The problem specifies that x is the amount John gets a week, so we need to express everything in terms of how much John gets.
"Peter gets twice as much pocket money as John"
P = 2x
"George gets $3 less than Peter"
G = P - 3 = 2x - 3
"Altogether the three boys get $17"
x + P + G = 17
x + 2x + 2x - 3 = 17
You can solve from there.
2006-11-25 06:58:46 · answer #1 · answered by Jim Burnell 6 · 0⤊ 0⤋
If J=X
P=2X
G=P-3
P+G+J=17
plug in P to the G equation
G=2X-3
then plug in P and G to solve for J
2X + 2X - 3 + X = 17
5x-3=17
5x=20
x=4
John gets $4, Peter gets $8, and George gets $5
2006-11-25 07:00:10 · answer #2 · answered by scurvybc 3 · 0⤊ 0⤋
a)
John = X
Peter = 2X
George = 2X - 3
b)
X + 2X + 2X - 3 = 17,
5X - 3 + 3 = 17 + 3,
5X = 20,
X = 20/5 = 4
therefore:
John = $4
Peter = $8
George = $5
Always check your work: 4 + 8 + 5 = 17
QED
2006-11-25 07:00:39 · answer #3 · answered by The Grand Inquisitor 5 · 0⤊ 0⤋
John - x
Peter - 2x
George - 2x -3
x + 2x +2x -3 = 17
5x -3 = 17
5x = 20
x =4
so John = $4
Peter = $8
George = $5
good luck !
2006-11-25 06:57:40 · answer #4 · answered by comic_bob 4 · 0⤊ 0⤋
a) john : x
peter : 2x
george : 2x-3
b)
total x+2x+2x-3 =17
=> 5x =20
x=4
hence john: $4
peter : $8
George: $5
2006-11-25 06:59:33 · answer #5 · answered by anami 3 · 0⤊ 0⤋
okkk.. here goes...
(a)i) 2x
ii)2x-3
(b)x+2x+2x-3=17
5x-3=17
+3 +3
5x=20
x=4
2006-11-25 07:03:01 · answer #6 · answered by xctibbles 2 · 0⤊ 0⤋