Answer:
boys = 250
girls = 150
Step-by-step explanation:
5g = 3b eq. 1
g + b = 400 eq. 2
g = girls
b = boys
From the eq. 2
g = 400 - b
Replacing this last eq. on eq. 1:
5(400-b) = 3b
5*400 + 5*-b = 3b
2000 - 5b = 3b
2000 = 3b + 5b
2000 = 8b
2000/8 = b
250 = b
From eq. 2
g + 250 = 400
g = 400 - 250
g = 150
Check:
from eq. 1
5*150 = 3*250 = 750
3 pounds, 46 ounces is approx 2.875 pounds
<span>First, subtract 132 from 145, then divide 145 by that answer (13) and you will get : 11.1538461538</span>
After checking with each triplet whether they form a Pythagorean triplet, we find that D) [10, 24, 26] is the only one that applies with the triplet.
