A x 4 = E
B ÷ 4 = E
C + 4 = E
D - 4 = E
________
&
A + B + C + D = 100
Challenge
what is the value of E ?
Click here for Answer
A×4 = E, so A=E/4B/4 = E, so B=4E
C+4 = E, so C=E=4
D-4 = E, so D=E+4
and
A+B+C+D=100.
Substitute values of A, B, C and D in the equation, we get,
(E/4) + 4E + E-4 + E+4 = 100
(E/4) + 4E + 2E = 100
(E/4) + 6E = 100
(E+24E)/4 = 100
E+24E = 100×4
25E = 400
E = 400/25
E = 16
Hence Value of E is 16.