A bookstore had 70 copies of a magazine. Yesterday, it sold 2/5 of them. Today, it sold 5/7 of what remained. How many copies does the bookstore have left?
Answers
Answer:
12 books
Step-by-step explanation:
Total books=70
Fraction of book sold yesterday=2/5
No. of book sold=2/5×70=28
No. of books remaining=70-28=42
Fraction of remaining books sold today=5/7
No. of books sold today=42×5/7=30
No. of books left=42-30=12
Ans. There are 12 books left in the store.
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Answer:
12
Step-by-step explanation:
the copies of a magazine the bookstore had at first: 70
no. of sold copies of the magazine: 2/5 of 70
no of copies of the magazine sold on the second day: 5/7 of what was left.
here, on the first day, they sold 2/5 of the 70 books
= 2/5 x 70
= 2 x 14
= 28
no of remaining books: 70 - 28 = 42
so, now, they sold 5/7 of the remaining books:
= 5/7 x 42
= 5 x 6
= 30
the number of books that the bookstore had sold in all: 28 + 30 =58.
the number of books that the bookstore had left: 70 - 58 = 12
so, the bookstore had 12 books left