tổng ban đầu; 60*2=120
nếu bớt ở số lớn 15 đv thì tổng giảm 15 đv
tổng mới ; 120-15=105
số bé ; 105:(2+1)*1=35
cach lam: 60 nhan2 = 120 tong so phan: 1+2=3 lay 105:3 nhan1=35 lay 35 nhan 2 +15=85[so lon]
Trung binh cong cua hai so la 96. Neu bot so lon 12 don vi thi ta duoc so moi gap 3 lan so be. Tim so be
trung binh cong cua hai so la 60 . Neu bơt so lon di 15 don vi thi ta duoc so moi gap 2 lan so be.Tim so be?
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