Together, Andrea and Brian weigh p pounds. Brian weighs 10 pounds more than Andrea. Brian and Andrea's dog Cubby weigh p/4 pounds more than Andrea. In terms of p, what is Cubby's weight?
(A) p/2 - 10
(B) 3p/4 - 5
(C)3p/2 -5
(D)5p/4 - 10
(E)5p-5
A=Andrea
B=Brian
C=Cubby
(1)A+B =p
(2)B=A + 10
(3)B+C= (p/4) + A
Replace B in equation 3 with A+10
A+10 + C = (p/4) + A
Subtract A from both sides
C+10 = (p/4)
4C + 40 = p
c= (p-40)/4
What am i doing wrong?
thanks.
(A) p/2 - 10
(B) 3p/4 - 5
(C)3p/2 -5
(D)5p/4 - 10
(E)5p-5
A=Andrea
B=Brian
C=Cubby
(1)A+B =p
(2)B=A + 10
(3)B+C= (p/4) + A
Replace B in equation 3 with A+10
A+10 + C = (p/4) + A
Subtract A from both sides
C+10 = (p/4)
4C + 40 = p
c= (p-40)/4
What am i doing wrong?
thanks.
