1.30 apples,36oranges and 48 pears are divided into several bags so that each bag contain equal amount of each kind of fruit?
2.what is the large number of bags?
3.How many fruits are there in one bag?
4.A number can divided by 48 and 72.Find the smallest value of this number.
5Bell A is rung at 18-min interval ,bell B is rung at 12:00pm, 2:00pm,4:00 and so on.If they are rung together at 12:00pm,when will they be next rung together?
Maths
2012-08-23 12:08 am
回答 (2)
2012-08-23 7:13 pm
✔ 最佳答案
1.the ratio of apples: oranges: pears =30:36:48When the no. of fruits in one bag is the smallest, the no. of bags will be largest.
the ratio of fruits in one bag is 30:36:48= 5:6:8
2. the largest number of bags =30/5 =6 bags //
3. no. of fruits in one bag = 5+6+8 =19 //
4. 48=2^4 x 3
72=2^3 x 3^2
L.C.M.=2^4 x 3^2
=144
The smallest value of this number is 144
5.Rung interval of A =18 mins
Rung interval of B =2 hrs =120 mins
18=2 x 3^2
120= 2^3 x3 x 5
L.C.M.=2^3 x 3^2 x 5
L.C.M.=360 mins
=6 hrs
the next rung together is 6:00pm //
2012-08-23 2:14 am
2.what is the large number of bags?
30+36+48=108//
the largest number of bags is 108 since:108/1=108//
3.How many fruits are there in one bag?
=1//
4.A number can divided by 48 and 72.Find the smallest value of this number
=144//
30+36+48=108//
the largest number of bags is 108 since:108/1=108//
3.How many fruits are there in one bag?
=1//
4.A number can divided by 48 and 72.Find the smallest value of this number
=144//
參考: me
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