math problem?

Question

okay i have 200 questions to answer but i cannot answer like 15 of them plaese help me....

3.4 + 2.6 / 6.8 + 3.2

a) 0.41
b)0.60
c)0.62
d)1.31

Answer 1

This is how I always learnt it:

BODMAS = brackets, powers, division, multiplication, addition, subtration
In this problem then, start with the division, which comes first, then add.
Only trouble is, this comes to 6.98 in this puzzle, which isn't any of the answers. I'm assuming this was written as a fraction, with the first part over the rest. In which case you should do that part first. I.e.
3.4 + 2.6
-----------
6.8 + 3.2
The brackets aren't written because mathematicians are lazy (:P) but you can imagine they are there.
Therefore 3.4 + 2.6 = 6
And 6.8 + 3.2 = 10
So 6 / 10 = 0.6
= b
:) Good luck

Answer 2

The answer is .6, but the problem was not presented correctly. As written, the answer should be 6.9823529 because of the order in which you are supposed to do the calculations (parentheses, exponents, multiplication, division, addition, subtraction).

The authors of your test should have presented it with parentheses like this:

(3.4 + 2.6) / (6.8 + 3.2)

Answer 3

In arithmetic and algebra, when a number or expression is both preceded and followed by a binary operation, a rule is required for which operation should be applied first. From the earliest use of mathematical notation, multiplication took precedence over addition, whichever side of a number it appeared on. Thus 3 + 4 × 5 = 5 × 4 + 3 = 23. When exponents were first introduced, in the 16th and 17th centuries, exponents took precedence over both addition and multiplication, and could be placed only as a superscript to the right of their base. Thus 3 + 5 2 = 28 and 3 × 5 2 = 75. To change the order of operations, a vinculum (an overline or underline) was originally used. Today we use parentheses (). Thus, if we want to force addition to precede multiplication, we write (3 + 4) × 5 = 35.

Answer 4

Do the division first.

2.6/6.8 = .3824

The new problem is 3.4 + .3824 + 3.2

This equals 6.98

Unfortunately, this is not an answer choice.

Should the question read: (3.4+2.6)/(6.8+3.2) the answer would become 6/10 or .6 (Answer choice B)

Answer 5

none of the above.
2.6/6.8 = 0.38235
3.4 + 0.38235 + 3.2 = 6.98

Interesting: Someone said always do add/sub first. That is never true. Only if parenthesis were added :

(3.4 + 2.6) / (6.8 + 3.2)

or if it were written this way instead (which is the same as with parenthesis)

3.4 + 2.6
==========
6.8 + 3.2

Answer 6

3.4+2.6=6
6.8+3.2=10
6/10=0.60

so the answer is b)0.60

Answer 7

3.4+2.6 / 6.8+3.2
6/10=0.60

Answer 8

i agree to the answerer above meh

Answer 9

add the top and bottom, then divide