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Let number of boys in the class be x Then, number of girls in the class = x Total age of boys = 13x Let the average age of girls be a years Total age of girls = ax Age of teacher = a + 23 Total age of the class = 13x + ax + a + 23 Total number of people in the class = x + x + 1 = 2x +1 Average age of the class = (13x + ax + a + 23)/ (2x + 1) (13x + ax + a + 23)/ (2x + 1) = 17 Since, we have two unknown values and only one equation so the value can’t be determined.
Angle bisectors of Q and R meet at point S, inside the triangle PQR. If angle QSR = 118˚ , then the measure of angle P is:
Which one among the following is the smallest?
Angle bisectors of Q and R meet at point S, inside the triangle PQR. If angle QSR = 126˚ , then the measure of angle P is:
The area of the rectangular field is 540 m² and its perimeter is 94 m. Find how much percent (approximately) less the breadth of the field is compared ...
If the radius of a right circular cylinder is doubled (an increase of 100%), and its height is reduced by half (a decrease of 50%), what will be the ra...
The sum of the perimeter of circle R and S together is 1012 cm. If the area of circle S is 18634 cm2 , then the radius of circle R is approxi...
If (x² + 1/x2) = 4, which of the options below is a possible value of x² - 1/x2?
Three cubes with sides 1.5 cm, 2 cm and 2.5 cm are melted to form a bigger cube. The surface area of the bigger cube is: (in cm 2)
The perimeter of a rhombus is 56 m and its height is 5 m. Its area is:
The base of a triangular field is 400 metres and its height 250 metres. Find the area of the field and also calculate the charges for supplying water to...
