The ratio of sorin's weekly allowance to joel's weekly allowance was 4: 7. after sorin received $50 frim his parents, the ratio became 8: 7. how much more money did joel have than sorin in the beginning?

$37.50

Step-by-step explanation:

Let beginning amount of money be

"s" for Sorin

and

"j" for Joel

The ratio is 4:7, so we can write:

Also,

After sorin GOT 50 MORE, the ratio became 8:7, so we can write:

Let's cross multiply 1st equation and find an expression for "j":

Now, we put this into 2nd and solve for s:

Cross multiply and solve for s:

So, "j" would be:

Sorin's allowance is $50

Joel's allowance is $87.50

Joel had 87.50 - 50 = $37.50 more than Sorin

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: