We all know that A + B = 15. What is A + 2B?

Question

What is A + 2B?

Choices:
a) 32
b) 33
c) 34
d) 35

^_^

Answer 1

correct answer is 35.

put A= -5
put B= 20

A+B = 15 (-5+20=15).

A+2B=35 (-5+40=35).

Answer 2

All of them.

If A = -2 and B = 17, A + B = 15 and A + 2B = 32.
If A = -3 and B = 18, A + B = 15 and A + 2B = 33.
If A = -4 and B = 19, A + B = 15 and A + 2B = 34.
If A = -5 and B = 20, A + B = 15 and A + 2B = 35.

Answer 3

35

Answer 4

Zero.

A+B = 15 from this we get
B = 15-A put this in A+2B we get
A+2(15-A) = A + 30 - 2A
= 30 - A
so A = 30 put this in A+B we get
30 + B = 15
B = -15

put A and B in A+2B we get
30+(2*-15) = 30-30
= 0.

Answer 5

thats so easy its WHAAACK

any of them will work as follows

a b total
-2 17 32
-3 18 33
-4 19 34
-5 20 35

Answer 6

A can be -2 abd B can be 17 in which case A+2B will be 32 i.e. choice (a) like that there can be many solutions and so all the choices are right

Answer 7

a + b = 15
so, logically, b = 15 - a
therefore, a + 2b = a + 2 (15 - a) = a + 30 - 2a = 30 - a
okay so a has to be a - ve number...you have not really provided adequate information, have you?

Answer 8

With your data;

A+B =15
A= 15-B

So, A+ 2B = 15-B+2B = 15 + B

You are asking what is 15+B,means everthing is possible for the answer.

Answer 9

It could be anyting. depends on B
A+2B = A+B +B = 15+ B

Answer 10

Data insufficient. You are required to give one more equation to get a definitive answer. It can be any of the four values.