George o na le dipherefere tse di fetang dipanana tsa gagwe ka 45%. Fa George a na le dipanana di le 200, o na le maungo a makae ka palo?

Rob, Royce, and Pedro are contractors getting ready to put a new roof on three homes. If the three homes will need 250 cases of shingles, with the first house needing 1/2 of the second, and the third needing double the first. How many cases of shingles will the third house need?
Fa George a na le dipanana di le 200, 45% go feta palo eo ke 45/100*200 = <<200*0.45=90>>90
Palo yotlhe ya dipherefere tse George a nang le tsone ke 200+90 =<<200+90=290>>290
Fa di kopane, George o na le dipherefere di le 290 + dipanana di le 200 = <<290+200=490>>490
#### 490 

Let x be the number of cases of shingles for the second house
The first house needs 1/2 x cases of shingles
The third house needs 2(1/2)x=x cases of shingles
250=x+x+(1/2)x
250=(5/2)x
250(2/5)=100=x
The third house needs 100 cases of shingles
#### 100