Verbal Reasoning - Mental Ability Questions

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?

A and B start running from the same point. A runs 3 km West, then turns South and runs 5 km, then turns to her right and runs 7 km. B runs 1 km South then turns to her right and runs 10 km. Where is B with respect to A now?

If north-­west becomes south, north­-east becomes west and so on, then east will become which direction?

In the following question, select the related letters from the given alternatives.
PRAG : QTDK : : STOP : ?

Select the related word/letters/number from the given alternatives.
MUMBAI: UMBMIA :: GURUGRAM : ?

C has more money than E and E has more money than B. C is the second richest after A. Who has the least money out of A, B, C and E?

In the following question, select the related letters from the given alternatives.
KLMN : IJKL : : TUVW : ?

Select the related letters from the given alternatives.
DFI : ACF :: OQT : ?