Question

Lima tahun yg lalu, 2 kali umur tyas sama dg umur aska ditambah 5, sedangkan dua thn yg akan dtg umur tyas sama dg 3/4 kali umur aska. jumlah umur tyas dan aska sekarang??

mohon bantuannya....

Answer 1

T = tyas A = Aska 2T - 5 = A +5 2 ( 3/4 A + 2 ) - 5 = A + 5 6/4 A + 4 - 5 = A + 5 3/2 A - 1 = A + 5 3/2 A - A = 5 + 1 1/2 A = 6 A = 12 3/4 x 12 + 2 = T 11 = T jumlah 11 + 12 = 23

Answer 2

Umur Tyas = x
Umur Azka = y
2 (x-5) = y-5+5  <=> 2x - 10 = y
x+2 = 3/4 (y+2) <=> x + 2 = 3/4 y + 6/4 <=> 4x+8 = 3y + 6

2x-y-10 = 0
4x - 3y + 2 = 0
2x - y - 10 = 4x - 3y + 2
-2x + 2y - 12 = 0
2y = 2x + 12
y = x + 6
2x - y - 10 = 0
2x - x - 6 - 10 = 0
x = 16
y = x + 6 = 22
x+y = 38