The second condition tells you that

is half the size of

, so

, which could be rewritten in several ways. In standard form, that would be

.
30 tens=ones is not right so it should be 30 tens=hundreds
Answer:
(30*2)/49
Step-by-step explanation:
let her morning walk distance be x
her evening distance walk =2 1/2 x
= 5x/2
her daily walk distance =5x/2+x
= 5x/2+2x/2=7x/2
her weekly walk distace= 7x/2*7=49x/2=30miles
x= (30*2)/49