Answer:
7.5 Hours (This is questioned weird though so it could be different)
Step-by-step explanation:
Just add 9 to 6 and you'll have 15 divided by two equals 7.5.
Or since it takes 6 hours for both, multiply by 2 equals 12
she got an 80%...you first divide 98 by 123, and round.
6/5
2/3 ÷ 5/9
2/3 × 9/5 ( while changing division to multiple, numerator and denominator changes
2 × 3/5 ( 9/3 =3
Ans =6/5