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.**