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Posted by on Friday, December 2, 2011 at 8:22am.

in march, the savings of oliver, asia, hassan, and abby was $1440. in april, their savings became equaly when oliver's savings is doubled, asia's savings is decreased by $30, abby's savings is increased by $46, and hassan remained the same. find the total saving in april.

  • math - , Friday, December 2, 2011 at 10:26am

    in March, let their individual savings be
    a, b, c, and d ---> a+b+c+d = 1440

    in April,
    Oliver: 2a
    Asia: b-30
    Hassan: c
    Abby: d+46
    total = 2a + b-30 + c + d+46
    = a + b + c + d + a + 16
    = 1440 + a + 16 = 1456 + a

    also: 2a = b-30 = c = d+46

    b -30= 2a , ---> b = 2a+30
    c = 2a
    d+46 = 2a ----> d = 2a-46


    so in a+b+c+d=1440
    a + 2a+30 + 2a + 2a-46 = 1440
    7a = 1456
    a = 208

    total in April = 1456+a = 1456+208 = 1664

    check:
    a=208, b=446 , c = 416, d = 370
    March: 208+446+416+370 = 1440
    April: 416+416+416+416 = 1664

  • math - , Friday, March 23, 2012 at 11:32pm

    HIHIHIH

  • math - , Friday, March 23, 2012 at 11:39pm

    WAZUPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP NMY FRIEND HAHA

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