A) The number of boxes were multiplied by 10 and the time by 2 so the number of machines must be multiplied by 10/2=5 meaning there are 16 additional machines.
B) We have two equations.5B=2M and 8(B+2)=3(M+7). Solving these gets us 12 bears and 32 monkeys so there are 44 total figurines.
C) 7W=10V and 8(W-3)=9(V+3). This gets us Winnie had 30 and Vincy 21. There are 51 total batches.
D) Lets set the uncle's age as U and the grandpa's as G. We are given 3U=G and 4(U-8)=G-8. Therefore U=24 and G=72. Grandpa is 72 years old.
E) Set gold ribbons as G and silver ones as S. We know that 2G=S and 4(G-10)=3(S-32) that gives us G=28 and S=56. Ms. Elizabeth started with 84 ribbons.
F) There are 6 drips every 20 seconds meaning there are 18 a minute. There are 121 minutes (including 10:00 and midnight) and 121*18=2178 so there are 2178 total drips.