Question

if the cost of 30 packets of 8 pencils each is r 600,what is the cost of 25 packets of 12 pencils each?

Answer 1

Hi friend!!!

Let cost of 1 pencil be 'x'

So cost of 1 packet of pencils(8 pencils)
=8x

While the cost of 30 packets = 30*8 x=600(given)

From this equation ,let us find out the value of x i.e. ,cost of one pencil:

30*8*x=600

240x=600

x=600/240

=Rs 2.5= Cost of a single pencil.

Cost of 25 packets containing 12 packets each = 25*12*2.5

=Rs 750 /
_________
_________

Hope it has aided.....

Answer 2

30x8y=600
y= 600/8
y=2.5

2.5x 25 x12= 750