Find the original average of boys and girls in the class, Mathematics

Assignment Help:

When 6 boys were admitted & 6 girls left the percentage of boys increased from 60% to 75%. Find the original no. of boys and girls in the class.

Ans: Let the no. of Boys be x

Girls be y

Total = x + y

APQ:

x/x + y =  60/100  ---------------(1)

x + 6/( x + 6)( y - 6)  = 75/100

On solving we get,

x = 24  and y = 16.

 

 

 

 


Related Discussions:- Find the original average of boys and girls in the class

Sequence, how to find the indicated term?

how to find the indicated term?

Compute the linear convolution, Compute the linear convolution of the discr...

Compute the linear convolution of the discrete-time signal x(n) ={3, 2, 2,1} and the impulse response function of a filter h(n) = {2, 1, 3} using the DFT and the IDFT.

Geometry, prove angle MJL is congruent to angle KNL

prove angle MJL is congruent to angle KNL

Childrens errors are a natural and inevitable part, Childrens errors are a ...

Childrens errors are a natural and inevitable part of their process of learning. In the process of grasping new concepts, children apply their existing understanding, which may

Interpretations of the derivative , Interpretations of the Derivative : ...

Interpretations of the Derivative : Before moving on to the section where we study how to calculate derivatives by ignoring the limits we were evaluating in the earlier secti

Rules for partial derivatives, Rules for Partial Derivatives ...

Rules for Partial Derivatives For a function, f = g (x, y) . h (x, y) = g (x, y)   + h

Multiplication of binomials, To understand the multiplication of binomials,...

To understand the multiplication of binomials, we should know what is meant by Distributive Law of Multiplication. Suppose that we are to multiply (a + b) and m. We

Mass-Spring-Damper -- Underdamped System, us consider the following mass-sp...

us consider the following mass-spring-damper system: md2xdt2+cdxdt+kx=0 with m=5 kg as the mass of the body, k=1.6N/m as the spring constant and two different values of c.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd