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 ?
A×4 = E, so A = E/4
B/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.
now substitute the values that we got of A, B, C and D in the equation, to 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
i answered same question before too ....
Hope it helps !!!
we know that
\(A*4=E\)
\(A=\frac{E}{4}\) -----> equation \(1\)
\(\frac{B}{4} =E\\ \\ B=4*E\) -----> equation \(2\)
\(C+4=E\)
\(C=E-4\) -----> equation \(3\)
\(D-4=E\)
\(D=E+4\) -----> equation \(4\)
\(A+B+C+D=100\) -----> equation \(5\)
Substitute equations \(1,2,3,4\) in equation \(5\)
\([\frac{E}{4} ]+[4*E]+[E-4]+[E+4]=100\\ E+16E+4E-16+4E+16=400\\ 25E=400\\\\ E=\frac{400}{25} \\ \\ E=16\)
therefore
the answer is
the value of E is \(16\)