Answer:
40
Step-by-step explanation:
You have to divid 240 by 6
14 is c
Step-by-step explanation:
Henley to sail port is 6cm and that distance is 120km so you divide 120 by 6 and you get 20 km per cm
N, n+1, n+2
(n+1)(n+2)=6(n+n+1)-12
n^2+3n+2=12n+6-12
n^2+3n+2=12n-6
n^2-9n+8=0
n^2-n-8n+8=0
n(n-1)-8(n-1)=0
(n-8)(n-1)=0
So there are actually two solutions that satisfy the conditions for the cousin's ages...
1,2, and 3 years old and 8,9,and 10 years old.
check...
2*3=6(1+2)-12, 6=18-12, 6=6
9*10=6(8+9)-12, 90=102-12, 12=12
