Given that,
Total number of oranges in the box is n(s) = 150
And,
The probability of oranges being rotten is P(R) = 0.06.
∴ Probability of good oranges = 1 – Probability of rotten oranges
= 1 – 0.06
= 0.94.
∵ Probability of good oranges = \(\frac{Total\,number\,of\,good\,oranges}{Total\,number\,of \,oranges}\)
∴ Total number of good oranges in the box = 0.94 × Total number of oranges.
= 0.94 × 150 = \(\frac{94}{100}\) × 150
= 94 × \(\frac{15}{10}\)
= 47 × 3 = 141.
∴ The number of good oranges in the box is 141.