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 ?*
Answers
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A×4=E
or, A=E/4--------------(1)
B÷4=E
or, B=4E---------------(2)
C+4=E
or, C=E-4--------------(3)
D-4=E
or, D=E+4-------------(4)
Now, A+B+C+D=100
or, E/4+4E+E-4+E+4=100
or, (E+16E+4E+4E)/4=100
or, 25E=400
or, E=400/25
or, E=16 Ans.
or, A=E/4--------------(1)
B÷4=E
or, B=4E---------------(2)
C+4=E
or, C=E-4--------------(3)
D-4=E
or, D=E+4-------------(4)
Now, A+B+C+D=100
or, E/4+4E+E-4+E+4=100
or, (E+16E+4E+4E)/4=100
or, 25E=400
or, E=400/25
or, E=16 Ans.
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