SOLUTION: In a jar 1/3 of the marbles are red, 1/4 are blue and the oter 10 are white.How many marbles are in the jar? please help me i really need your help.i just came to this new schoo

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Question 18576: In a jar 1/3 of the marbles are red, 1/4 are blue and the oter 10 are white.How many marbles are in the jar?
please help me i really need your help.i just came to this new school and i don't get it.i need it by monday and i need to show the work.if you can do this for me i really thank u so much
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Ok, let x = the total number of marbles in the jar. You can write an equation for the total number, x, like this:
x+=+%281%2F3%29x+%2B+%281%2F4%29x+%2B+10 Now all you need to do is solve for x. Add: %281%2F3%29x+%2B+%281%2F4%29x+=+%284%2F12%29x+%2B+%283%2F12%29x%29 = %287%2F12%29x
x+=+%287%2F12%29x+%2B+10 Subtract %287%2F12%29x from both sides.
x+-+%287%2F12%29x+=+10
%285%2F12%29x+=+10 Finally, multiply both sides by the multiplicative inverse of 5%2F12+=+12%2F5
x+=+10%2812%2F5%29
x+=+24
There are 24 marbles in the jar.
Check:
%281%2F3%29%2824%29+%2B+%281%2F4%29%2824%29+%2B+10+=+8+%2B+6+%2B+10+ = 24 The total number of marbles in the jar.