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.

After interchanging which two numbers (not digits) will the value of the given expression be ‘81’?
 798 + 27 – 719 ÷ 6 × 5 

Select the correct combination of mathematical signs to replace ‘*’ signs and to balance the given equation:
96*2*20*2*174

Which two signs need to be interchanged to make the given equation correct?
104 ÷ 8 + 6 - 9 x 3 = 34

Find out the two signs to be interchanged for making following equation correct.
5 + 3 x 66 - 11 ÷ 8 = 15

If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
 5 ÷ 5 + 5 – 10 × 10 = ?

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

After interchanging the given two numbers and two signs what will be the values of equation (I) and (II) respectively?
 × and +, 3 and 9
 I. 7 × 9 – 8 ÷ 2 + 3
 II. 4 × 9 – 3 + 8 ÷ 2