R - 18 = 50
r = 50 + 18 = 68
Hence Rick is 68 yrs old
Answer:
400,000km is represented as 8cm on the map!!!
Step-by-step explanation:
1cm=50000km
8cm=x
Criss cross
1cmx=8cm×50000km
divide both side with 1cm
x=8×50000km
x=400,000km
2 3/4 - 1 = 1 3/4 or 1.75