Direction (Qs. 1 to 10): What should come in place of the questions mark (?) in the following questions?

743 + 958 = ? % of 5670

√5929 = ?

638 + 254 ÷ 8 × 4 = ?

18 x 14 + 46/16 x 10 - 23 = ?

8 × 5 + (?)² = (11)²

38 percent of first number is 52 percent of the second numer. What is the respective ratio of the first number to the second number?

The average age of a man and his son is 54 years. The ratio of their age is 23 : 13 respectively.What will be ratio of their ages after 6 years ?

A single person takes 3 minutes to write a letter. If from 10 a.m. to 12.00 noon, 1960 letters are to be written, how many persons should be employed on this job ?

The simple interest accrued on an amount of Rs. 9,530 at the end of 6 years is Rs.2,859. What is the rate of interest p.c.p.a.?

The cost of 10 Chairs and 15 Tables is Rs. 15,525. What is the cost of 8 Chairs and 12 Tables ?