Question

Simon read 50 pages of a book containing 100 pages .Surbhi read 2 / 5
of the same book .Who read less? (b) Find the value of unknown variable:
20b=80

Answer 1

Answer:

SURBHI (B) 4

Step-by-step explanation:

simon read 50/100 pages = 1/2 of book.

surbhi read 2/5 of book.

LCM of denominatiors = 10

1/2×5/5 = 5/10

2/5×2/2 = 4/10

So surbhi read less.

(b) 20b = 80

20 × b = 80

80÷20 = 4

so, b = 4