Question
If the area of the base of a cylinder is 346.5cm² and
the area of the curved surface in 990 cm², then its height is: (Take π = 22/7)Solution
The correct answer is D
18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the f...
The ratio of the age of X after 4 years to the age of Y after 6 years is 3:2. The sum of the ages of Y and Z after 10 years is 72 years. The age of Z be...
Present age of ‘D’ is 45% more than that of ‘E’. 9 years ago, ‘D’ was 1.75 times as old as ‘E’. Find the present age of ‘E’.
...Rhea is 4 years elder to Mohan. The ratio of Rhea’s age 6 years ago to Mohan’s age 2 years hence is 3:4. What is Mohan’s present age?
A student multiplied a number by 4/5 instead of 5/4. What is the percentage error in the calculation.
The total age of A, B and C seven years hence will be 90 years. Find the age of C six years hence, if the present age of A and B is 39 years and 25 year...
At present Meena is eight times her daughter’s age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respective...
The sum of ages of 4 children born at the intervals of 2 years each is 36 years. Find out the age of the youngest child.
The current age ratio of Rohit and Varun is 9:7. If 6 years back, the total of their ages was 120 years, what’s the gap between their present ages?
- The age of Kiran 4 years ago was 10% more than the present age of Deepa. 4 years hence, the ratio of their ages will be 5:4. Find the difference between th...
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