If the signs – and ÷ are interchanged, then which of the following equations would be correct?

The two-given expression on either side of the ‘=’ sign will have the same value if two numbers on either side or on the same side are interchanged. Find from the given option the correct numbers to be interchanged.
4 + 6 × 2 – 27 ÷ 3 =  8 × 2 – 4 + 9 ÷ 3

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 29 × 13 = 14, 76 × 26 = 34, then 64 × 14 = ?

Which two signs have to be interchanged to correct the given equation?
52 + 64 – 16 ÷ 36 × 6=20

The ratio of the present age of the two brothers is 1: 2. And 5 years ago this ratio was 1: 3. So what will be the ratio of their age after 5 years.

If Q means ‘add to’, J means ‘multiply by’, T means ‘subtract from’ and K means ‘divide by’, then 26 K 2 Q 3 J 6 T 4 = ?   

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 12 × 16 = 188 and 14 × 18 = 248, then find the value of 16 × 20 = ?