Question

if p-q/p = 2/7 then q/p = ?


a 2/5
b 5/7
c 1
d 7/5
e 7/2

Answer 1

Yes, and the answer is 5/7..... when i do the cross multiplication i get 7/5.

Answer 2

sorry - misread your question, should be:\[\frac{p-q}{p}=\frac{p}{p}-\frac{q}{p}=1-\frac{q}{p}\]

Answer 3

which does indeed lead to the solution 5/7

Answer 4

can you see how?

Answer 5

NO I'm still confused :-/

Answer 6

ok, I've shown you that:\[\frac{p-q}{p}=1-\frac{q}{p}\]so now we can write:\[1-\frac{q}{p}=\frac{2}{7}\]therefore:\[1-\frac{2}{7}=\frac{q}{p}\]\[\frac{7-2}{7}=\frac{q}{p}\]\[\frac{5}{7}=\frac{q}{p}\]

Answer 7

make sense?

Answer 8

Thanks that does make sense!

Answer 9

yw