In Aunt Melly’s attics there are also spiders and ants, the total of 136 legs and 20 heads. If a spider has 8 legs and an ant ha s 6 legs, how many spiders and how many ants are there? help please in 5 min to 10 min
2 answers:
I would say Aunt Melly needs an exterminator...lol there are 20 heads...so u know there r gonna be 20 insects total spiders (s) have 8 legs and ants (a) have 6 legs s + a = 20 heads......s = 20 - a 8s + 6a = 136 legs 8(20 - a) + 6a = 136 160 - 8a + 6a = 136 -8a + 6a = 136 - 160 -2a = -24 a = -24/-2 a = 12 s + a = 20 s + 12 = 20 s = 20 - 12 s = 8 so there r 8 spiders and 12 ants
there are 20 heads...so u know there r gonna be 20 insects total
spiders (s) have 8 legs and ants (a) have 6 legs
s + a = 20 heads......s = 20 - a
8s + 6a = 136 legs
8(20 - a) + 6a = 136
160 - 8a + 6a = 136
-8a + 6a = 136 - 160
-2a = -24
a = -24/-2
a = 12
s + a = 20
s + 12 = 20
s = 20 - 12
s = 8
so there r 8 spiders and 12 ants
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