Question 1119526
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1. Two numbers are in the ratio 3:7. By adding 10 to each, we get two new numbers in the ratio 2:3. Find the original numbers. 
2. Ten bananas weigh as much 6 star apples. In this rate, how many star apples will weigh as much as 15 bananas? 
3. One store sold twice more apples in the afternoon that in the morning. The store sold 450 pieces of apples. How many apples are sold in the morning? 
4. Classy finished 3/4 of a book.she calculated that she finished 80 pages more than she has yet to read. How long is her book? 
5. Joey gathered twice more marbles than vic and tito gathered 2 more marbles than vic. They gathered 26 marbles. How many marbles did vic gather?
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#1:

{{{system((n+10)/(d+10)=2/3, n/d=3/7)}}}


{{{system(2d-3n=10,7n=3d)}}}


{{{system(2d-3n=10,3d-7n=0)}}}


sub first from second equations
{{{-9n-(-14)n=30-0}}}


{{{5n=30}}}


{{{highlight(n=6)}}}

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{{{3d=7*n}}}
{{{3d=7*6}}}
{{{d=7*6/3}}}
{{{highlight(d=14)}}}

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Original Number:  {{{highlight(6/14)}}}



#5:

??",... twice more marbles than vic ..."??
This is not the best wording and maybe not what was meant.


j, v, t
Joey, Vic, Tito


Literal Translation of the description:
{{{system(j=v+2v,t=v+2,j+v+t=26)}}}

Simplify and work with that system.  Your description does not work!  


If you were to change to description saying, "Joey gathered twice the marbles that Vic gathered.", then there is a solution that will work.



#4:
Let number of pages in the book be B.
The description will give the equation {{{(3/4)B=80+B/4}}}, since "still yet to be read", is  {{{(1/4)B}}}.   Solve for B.