Question

A and b part both plz

Answer 1

Answer:a)1037/66

b)23/37

Step-by-step explanation:

a) 15.712121....

Let x=15.7121212..........-1

On multiplying by 100 on both the sides

100x=1571.21212121................-2

On subtracting 1 from 2 we get

100x-x=1571.212121.......-15.712121........

99x= 1555.5

x=1555.5/99

x=1037/66

b)0.621 bar=Let X = 0.621 ( bar on 621 )

Then, X = 0.621621 ---------(1)

Multiply equation (1) by 1000 , We get

1000X = 621.621621 ----------(2)

Subtracting equation (1) from equation (2) , we get

1000X = 621.621621

X = 0.621621

------------------------------

999X = 621

X = 621/999 = 23/37 [ P/Q form ]

Hence,

0.621 ( bar on 621 ) is of the form 23/37 which is in the form of p/q.