Answer:
12
Step-by-step explanation:
1:2:4
let josh=1x
james=2x
john=4x
josh has nine sweets less than john
4x-1x=9
3x=9
x=3
john's sweet=4x
4(3)=12
4mins---->12 cars
6mins---->(6*12/4)=18
4mins---->12
5mins---->(5*12/4)=15
And so on
Answer:
C
Step-by-step explanation: