Question

a sweet box contains some number of coconut burfi and 30 ladoos .the probability of a picking a coconut burfi is 0.4th of probability of picking a laddu. Find the number of coconut burfi in box​

Answer 1

Answer:

Step-by-step explanation:

Let the number of coconuts be x

Given, number of laddoos =30

Probability of picking up a coconut is = P{coconut} = x/(30+x)

Probability of picking up a laddoos is=

P{laddoos} = 30/(x+30)

As given,

P{ coconut} = 0.4×P{laddoos}

x/(30+x) = 0.4 × 30/(x+30)

Since x cannot be -30 , x+30 can be cancelled on both sides.

x = 0.4×30

x = 12