Question

21. If the cost of 30 packets of 8 pencils each is * 600, what is the cost of 25 pack
pencils each?
(a) * 725
(b) 750
(c) 480
(d) 720
A rail journey of 75 km costs 215. How much will a journey of 120 km cost?
99​

Answer 1

Answer:

b) 750

Step-by-step explanation:

Let cost of 1 pencil be 'x'

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

While the cost of 30 packets of 8 pencils each = 30 × 8 × x = 600

Cost of 1 pencil

30 × 8 × x = 600

240x = 600

x = 600/240

= 2.5

Cost of 1 pencil is Rs 2.5 .

Cost of 25 packets containing 12 pencils each = 25×12×2.5= 750