IDNStudy.com, ang iyong mapagkukunan ng mabilis at eksaktong mga sagot. Alamin ang mga maaasahang sagot sa iyong mga tanong mula sa aming malawak na kaalaman sa mga eksperto.

Kwai Fang had some boxes of fruits for sale. She sold 35 boxes on Monday. She sold 1/5 of the remaining boxes of fruits on Tuesday. Then she had 1/3 of the total number of boxes of fruits left. How many boxes of fruits did she have at first?

Sagot :

Let total boxes : x
boxes of fruits sold on Monday : 35
boxes of fruits sold on Tuesday :  1/5 (x/35) or [tex] \frac{x}{5} [/tex] - 7
boxes of fruits left:  1/3 of x 

35 + x/5 - 7 + x/3 = x

LCD:  (5) (3)

35 (5)(3) + x(3)  - 7(3)(5) + x(5) = x (5)(3)

35 (15) + 3x - 7(15) + 5x = 15x
525 - 105 + 3x + 5x = 15x
420 = 15x - 8x

420/7 = 7x/7

x = 60 boxes total number of boxes she had at first (Final answer)

To check 
35 + 1/5(60-35) + 1/3(60) = 60

35 + 1/5(25) + 20 = 60
35 + 5 + 20 = 60
              60 = 60