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# cphill plz help asap

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https://vle.mathswatch.co.uk/images/questions/question17139.png

https://vle.mathswatch.co.uk/images/questions/question17077.png

https://vle.mathswatch.co.uk/images/questions/question16708.png

May 1, 2020

#1
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1.

a. 65:195

b. C 3/5

May 1, 2020
#2
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First problem:  3 : 5  =  3 / 5  =  1 / (5 / 3)

Second problem:  x / y  =  5 / 3     --->   multiply both sides by y:  x  =  (5/3)·y

x + y  =  56     --->     (5/3)·y + y  =  56     --->     (8/3)·y  =  56     --->     8y  =  168     --->     y  =  21

Now that you know what y is, substitute that value into  x + y  =  56  to find out the value of x.

Then, find out what  x - y  equals.

Third problem:  ratio of blue to green  =  2 : 7

ratio of green to red  =  3 : 1

I need to know this:  blue : green : red   so I need the same number for green in the first ratio as in the second ratio.

I can get this number by multipling 7 x 3  =  21.

Now, I have these ratios:  blue to green  =  6 : 21

green to red  =  21 : 7

So, my ratio of  blue : green : red

is:                          6 :   21    : 7             (for a total of 34)

multiplying by 2:   12 :  42   : 14            (for a total of 68)

multiplying by 3:   18 :  63   : 21            (for a total of 102  -- too many!  --  making the previous answer the one!)

May 2, 2020