Miscellaneous Company Exam Company Interview

If 9 is added to twice a number and this sum is multiplied by 3, the result is the same as if the number is multiplied by 4 and 13 is added to the product. What is the number?

I got a -7. But when I plugged the -7 back into the equation, it didn't work. What am I doing wrong?

Thank you.

Read Solution (Total 2)

let the number be x;
3(9+2x)=4x+13;
x=-7;
10 years agoHelpfull: Yes(2) No(0)

There is a logic and a mistake in the sum
Logic is
(X+9+9)=4x+3(not13)
X=15
Then its got ans
9 years agoHelpfull: Yes(0) No(1)

Miscellaneous Company Exam Other Question

a cathedral tower 200 ft high is 250 ft from a church that is 150 ft high. At he same instant, two crows, one from each tower, fly off at the same speed heading toward some grain t Lets assume that you have a CPU which takes y microseconds to add 2 floating point numbers and z microseconds to multiply 2 floating point numbers. You have an nxm matrix and an mxp matrix. What is the time taken (in microseconds) to multiply the matrices?

a) It is not possible to multiply them.
b) 100
c) (m*n*p*(y-z))
d) n*p*e^(y+z)
e) (mz+(m-1)*y)*n*p