In a school there are total 414 students. The ratio of boys and girls is 5 : 4. If 46 more boys gets admitted into the school, then what will be the new ratio of boys and girls?

In how much time will a sum of Rs. 12500 amounts to Rs. 20000 at the rate of 8 percent per annum at simple interest?

What is the value of cosecA(1 − cosA)(cosecA + cotA)?

Average weight of 10 persons is 40 kg. A new person join the group and average weight of 11 persons becomes 42 kg. What will be the weight of new person?

What is the sum of all three-digit numbers which are divisible by 20?

PK is the median and M is a centroid of triangle PQR. If PK is 15 cm, then find length of PM?

The average of 10 observations is 21. A new observation is included and the average of these 11 numbers is 1 less than the prevoius average. The 11^th observation is____

What is the area (in cm² ) of an equilateral triangle of side 20 cm?