XbenX wrote: 3. 3 red birds in 4 days eat 36 grams of seed, 5 blue birds in 3 days eat 60 grams of seed. For how many days could 2 red birds and 4 blue birds feed on 88 grams seed? FTFY

88/7 isn't 12

12 WHOLE days

3 red birds eat 36 grams of seed for 4 days, therefore a single red bird eats 3gr per day 5 blue birds eat 60 grams of seed for 3 days, therefore a single blue bird eats 4gr per day 2 red birds and 4 blue birds eat $(2 \times 3)+(4 \times 4)=6+16=22$ grams of seed per day $88/22=4$, so 88 grams of seed will last the birds for 4 days $\blacksquare$

$\frac{88}{7}$ is equal to $12.5714285714...$ not 12. but im assuming I can round it up to about 12 and a half days.