Study the following graph carefully to answer the given questions

After working for 3 days S is joined by O. If they complete the remaining work in 3 more days, in how many days can O alone complete the work?

 If $$ {x\over y}={y\over w}$$ then what is the value of (xy+zw).

Divide 50 into two parts so that the sum of their reciprocals is   $${1\over 12} $$

Ratio of the monthly income of A to B is 4:3 and the ratio of the monthly income of B to C is 2:1. If the difference between the C’s monthly income and his savings is Rs.12000 and the saving’s of C is half of his expenditure, then what is the average of the income of A, B and C?

Directions: The Pie chart given here represents the domestic expenditure of a family in per cent. Study the chart and answer the following questions if the total monthly income of the family is ₹ 33,650.

A: Expenditure on food

B: Expenditure on house-rent

C: Expenditure on entertainment

D: Expenditure on education and maintenance of children

E: Medical and miscellaneous expenditure

F: Deductions towards provident fund

The annual savings in the form of provident fund would be

The perimeter of a circle is equal to the square perimeter. What will be the ratio of their areas?

While selling an article, a shopkeeper gives a discount of 5%. If he gives a discount of 7%, he earns Rs.15 less as profit. The marked price of the article is -

For which value of x the seven-digit number 8439x53 is divisible by 99?