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Elena-2011 [213]
4 years ago
14

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 ?*

Mathematics
2 answers:
tresset_1 [31]3 years ago
8 0
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 ....

<span>Hope it helps !!!</span>
xenn [34]3 years ago
4 0

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

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