Ok, I got a Maths exam tomorrow and I'm just looking over my text book and theres a question that says;
"Split £35 in the ratio 4:3"
How would I do this?
2007-05-07 05:22:51 · 7 answers · asked by OhWhen 1 in Science & Mathematics ➔ Mathematics
Ratios are the 'sharing' of a large quantity in a particular way.
In your example £35 to be shared in relationship 4:3
Therefore the total number of parts is 4 + 3 = 7
one share is 4 x {35/7}
the other is 3 x [35/7}
2007-05-08 07:29:03 · answer #1 · answered by Rod Mac 5 · 0⤊ 0⤋
if a and b are the 2 parts of 35, then
a/b = 4/3 and a+b = 35. Sinces 4/3 is a simplified ratio, let's unsimplify it by putting back whatever factor was cancelled out during simplification:
a/b = 4x / 3x, so
4x + 3x = 35
7x = 35
x = 5 ............ the cancelled factor, thus
a = 4x = 4(5) = 20
b = 3x = 3(5) = 15
Once you understand, you just look at the problem and think, "4+3 = 7, 7 goes into 35 5 times, 4 times 5 is 20, 3 times 5 is 15." With just a bit of practice, you don't even think the words.
2007-05-07 05:33:34 · answer #2 · answered by Philo 7 · 0⤊ 0⤋
For the ration 4:3, you have 7 units (4+3)
Use ratios to split the 35
4/7(35) = 20
3/7(35) = 15
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2007-05-07 05:32:12 · answer #3 · answered by Robert L 7 · 2⤊ 0⤋
4:3
4+3 = 7 - Add the ratios
£35/7 = £5 - Divide the total amount by the sum of the ratios
Of the ratio 4:3, multiply £5 to both of them.
Therefore = £20:£15
And if you realise, £20 + £15 = £35.
2007-05-07 05:31:12 · answer #4 · answered by Lina 2 · 3⤊ 0⤋
£20:£15
2007-05-07 05:31:06 · answer #5 · answered by mward129 2 · 0⤊ 0⤋
i hate to say this, but if you cant work that out you are in serious trouble for your exam. i wish you luck but i suggest you revise... a lot.
but what the others say is is the answer.
2007-05-07 05:35:29 · answer #6 · answered by genkilady 4 · 0⤊ 0⤋
Do your own revision. Work it out!!!!
2007-05-07 05:30:42 · answer #7 · answered by littlebethan 5 · 0⤊ 3⤋