# A vendor sells 70 of the oranges he had and throws away 20% of the remainder.Next day he sells 50% of the remainder and throws away the rest.What % of this oranges does he throw away

2
by srajadhax

Log in to add a comment

by srajadhax

Log in to add a comment

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

The first sentence is not very clear to me... whether he sells 70 or the total number is 70.

===================

Total number of oranges he had = N

Thrown away = (N - 70)*20/100 = (N-70)* 1/5

Remaining = (N-70) * 4/5

Sold next day = (N-70) * 4/5 * 1/2

Thrown away now = (N-70) *4/5 *1/2 = (N-70)*2/5

Total thrown away oranges = (N-70) * (1/5+2/5) = (N-70) * 3/5

Percentage of thrown away fruits = (3 N /5 N - 42 / N ) * 100

= 60 - 4200/N

For example, the oranges are totally 140, then the percentage is 30 %

===================

Total number of oranges he had = N

Thrown away = (N - 70)*20/100 = (N-70)* 1/5

Remaining = (N-70) * 4/5

Sold next day = (N-70) * 4/5 * 1/2

Thrown away now = (N-70) *4/5 *1/2 = (N-70)*2/5

Total thrown away oranges = (N-70) * (1/5+2/5) = (N-70) * 3/5

Percentage of thrown away fruits = (3 N /5 N - 42 / N ) * 100

= 60 - 4200/N

For example, the oranges are totally 140, then the percentage is 30 %