Answer:
11.7
Step-by-step explanation:
multiply RS by the scale factor to get R'S'
3/4 is longer than 2/15 by 37/60
2.64
6.60/5=1.32 (that’s your rate)
2 x 1.32=2.64
This means that Isaac gets £2.64
Avg. speed Joanna runs: 7.5km/h
how much she runs everyday: 15km
15km/7.5= 2 hours of running time everyday
She leaves at 8:30, comes back at ?
8:30+ 2:00= 10:30
Joanna arrives back at 10:30a.m.