(a+b)(a-b) = a ^2 -b^2
44 (a-b) - 704
(a-b = 704/44 = 16
a = adult
s = student = 3a
a + 3a = 472
a = 118 then s = 3a = 354 tix
WiseOwl....17 posts in the last few.....why are we doing your homework? Have you TRIED to do any of your posts ....which are not that difficult?
4 + .8r = 12 + 0.3r
.5r = 8
r = 16
b = bill now = 2d d = dan's age
2d-12 = 8 (d-12) solve for dan's age
84 = 6d
d = 14 the b = 2d = 28 y/o
https://web2.0calc.com/questions/help-would-be-appreciated_12#r1
s = sweety now
m = mom now = 2s + 12
in 8 years sweety = s+ 8
mom = (2s+12) + 8 = 3(s+8) - 20 solve for s
2s + 20 = 3s + 4
16 y/o = s m = 2s+12 = 2(16)+ 12 = 44 y/o
x = original population
5.0625 x = x (1 + p/100)4 We can remove 'x' form the equation ...included only for clarity
5.0625 = (1+ p/100)^4 take fourth root of both sides (you could also use LOGs if you know what those are )
1.5 = 1 + p/100
.5 = p /100 p = 50 %
If we assume that sugar is measued in gallons too
water makes up 16 out of (16+ 3 + 1 = 20) , or 16/20 ths of the final product
3 gallons * 16 / 20 = 48/20 = 2 2/5 or 12 / 5 gallons
