Ihave two story problems.
1. lucy is 4 years older than her neighbor. the sum of their ages is no more than 14 years. the oldest age that lucy's neighbor could be is years old.
2. kat's father is 4 times as old as kat. the sum of their ages is no less than 55. the youngest age kat could be is years old.

Let lucy = l & neighbour= n
l = n +4
l + n= 14 years
substitute l with n +4
(n +4) + n = 14
2n +4 =14
n=5 years
l = n + 4 lets substitute n with 5
l = 5 + 4
lucy = 9 years

1.) 900 = 3(300)
Therefore, pyramid B is 3 times bigger than pyramid A.

2.) Volume of silo = volume of cylinder + volume of hemisphere = 22/7 x 8^2 x 172 + 2/3 x 22/7 x 8^3 = 34,597.57 + 1,072.76 ≈ 35,669 ft^3

3.) Required volume = volume of cone - volume of bubble gum = 1/3 x 22/7 x (1.75)^2 x 3.5 - 4/3 x 22/7 x (0.25)^3 = 11.229 - 0.065 = 11.164 ≈ 11.15