Question

A and 8 are
respectively 20%
and 10% lower than
C What percent of B
is A?
66 66
88.88
50
45%​

Answer 1

Answer:

As we know,

N=N

0

/2

n

no. of particles after n half lives

here,

200 minutes means 4 half life of X nad 2 half life of Y.

AmountleftofX=

2

4

N

0

∵n=4 (half-lives)

AmountleftofY=

2

2

N

0

∵n=2

∴RatioofX:Yleft=

2

4

2

2

=

4

1