13x -14= 9x+10 what is the value of x ?

Direction: what should come in place at question mark(?).

45% of 224×?% of 120=8104.32

Three numbers are such that if the average of any two of them is added to the third number, the sums obtained are 168, 174 and 180 respectively. What is the average of the original three numbers?

Direction: What approximate value will come in place of the question mark (?) in the following question? (You are not expected to calculate the exact value)

(31.99)^1/5 × (80.78)^1/4 × (5.15)² = ? × 2.29

If AD, BE and CF are medians of ∆ABC, then which one of the following statements is correct? 

An arc of 30 ° in one circle is double an arc in a second circle, the radius of which is three times the radius of the first. Then the angles subtended by the arc of the second circle at its center is 

Two - third of a consignment was sold at a profit of 5% and the remaining at a loss of 2 %. If the total profit was Rs. 400. then the value of the consignment was

A sum of money lent out at simple interest amounts to ₹720 after 2 years and 1020 after a further period of 5 years. Find the principal.