For the following questions answer them individually
The average age of 24 students is 12 years. It was observed that while calculating the average age, the age of a student was taken as 14 years instead of 8 years. What will be the correct average age (in years)?
70% of the cost price of a article is equal to the 40% of its selling price. What is the profit or loss percentage?
If I walk at 7/6 of my usual speed, then I reach my office 15 minutes early. What is the usual time taken (in minutes) by me to reach the office?
A person lent Rs 10000 to B for 3 years and Rs 6000 to C for 4 years on simple interest at same rate of interest and received Rs 5400 in all from both of them as interest. What is the rate of interest (in %)?
If $$3x+[\frac{1}{(5x)}]=7$$, then what is the value of $$\frac{5x}{(15x^2 + 15x + 1)}$$?
If $$x +[\frac{1}{(4x)}]=\frac{5}{2}$$, then what is the value of $$\frac{(64x^6 + 1)}{8x^3}$$ ?
In triangle ABC, AD, BE and CF are the medians intersecting at point G and area of triangle ABC is 156 cm2. What is the area $$(in cm^2)$$ of triangle FGE?
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