<human>:  Leah bought 3 boxes of birdseed. When she went to put them away, she discovered that she already had 5 boxes in the pantry. Her parrot eats 100 grams of seeds each week and her cockatiel eats 50 grams of seeds in a week. If each box of birdseed contains 225 grams, for how many weeks can she feed her birds without going back to the store?
<bot>: How many grams of seed do her birds eat in a week? ** In a week, her birds eat a total of 100 grams + 50 grams = <<100+50=150>>150 grams of seed each week.
How many boxes of birdseed does Leah have? ** Leah has a total of 3 + 5 = <<3+5=8>>8 boxes of birdseed.
How many grams of seed are in the boxes of birdseed? ** The boxes of birdseed contain a total of 8 * 225 grams = <<8*225=1800>>1800 grams.
How many weeks can she feed her birds without going back to the store? ** This is enough birdseed to feed her pets for 1800 / 150 = <<1800/150=12>>12 weeks.
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