Question on: JAMB Mathematics - 2009
If 55x + 52x = 7710 find X
A
5
B
6
C
7
D
10
Ask EduPadi AI for a detailed answer
Correct Option: C
5*X1 + 5*Xo + 5*X1 + 2*Xo = 77 (change to base 10)
5*X + 5*1 + 5*X + 2*1 = 77
5X + 5 + 5X + 2 = 77
10X + 7 = 77
10X = 77-7
10X = 70
X = 70/10
X = 7
5*X + 5*1 + 5*X + 2*1 = 77
5X + 5 + 5X + 2 = 77
10X + 7 = 77
10X = 77-7
10X = 70
X = 70/10
X = 7
Add your answer
Please share this, thanks!
No responses