Question

a box contains 150 oranges.if one orange is taken out fron the box at random and the probability of its being rotten is 0.06, then find the number of good oranges in the box.

Answer 1

Total no. of oranges=150
probability of rotten orange=0.06

prob of good orange=x
no. of good orange=y

prob of rotten orange + probability of good orange=1
0.06+ x =1
x=1 - 0.06
=0.94

prob of good orange=no. of good orange÷ total oranges
0.94= y ÷ 150
0.94×150 = y
y= 141


so no. of good oranges are 141