Question
9 years ago, the average age of a family of six persons
was 60 years. In between these 9 years the family adopted a girl. Now at present the average age of the family is same as it was 9 years ago. Find the present age of the girl. TYPE 35Solution
Sum of the present age of the family excluding girl = 6 x (60 + 9) = 414 years Sum of the present age of the family including girl = 7 x 60 = 420 years Present age of the girl = 420 – 414 = 6 years
The sides of a triangle are 9 cm, 12 cm, and 15 cm. What is the area of the largest circle that can be inscribed in this triangle?Â
Which of the following can create the largest printouts:
The ratio of two numbers is 4:8 and their LCM is 64. The numbers are:
In a circle, two chords AB and CD intersect inside the circle at P. If AP = 4 cm, PB = 6 cm, CP = 5 cm, and PD = x cm, what is the value of x?
If the sum of remainders, obtained on dividing 52436 by 22 and 59461 by 73, is divided by 13, then the remainder will be:
Which of the following functions is not one-one?
A man travels 60 km at a speed of 30 km/h and then travels 90 km at a speed of 60 km/h. What is his average speed for the entire journey?
(76.98% of 599.98) ÷ 20.99 = ? + 7.98% of 199.99
A giant circular wheel has a diameter of 63 metres. In how many revolutions will the wheel cover a total of 79.2 km?
A sum of money doubles itself in 5 years at simple interest. In how many years will it become 5 times itself at the same rate of interest?
