Question

[Tran Kieu Oanh]

1. The sum of two consecutive numbers is 149. The greater number is .....(giai ra ket qua)

2. Find the greatest 4-digit-number which is divisible by both 4 and 7. The result (giai ra ket qua)

3. 6 workers take 2 hours to collect eggs. If 2 workers are sick, the other workers need ......... hours to collect the eggs

Answer 1

[Lê Quốc Vương]

a)75

b)9996

c)3 giờ

Answer 2

[Bùi Anh Đức]

Lesson 1 :                 Answer

       Two consecutive number less than 1 unit each

Large number is:

          (149-1) : 2 = 75

Lesson 2 :               

     Among them is : 9996

Because: 9996:4=2499

               9996:7=1428

Lesson 3:            Answer

          After two people get sick of people remaining:

                   6-2=4(people)

          The ratio between 4 and 6 people is:

                 4:6= 2/3

         Time to gather the rest of the eggs:

                 2:2/3=3(hours)

Nhớ **** cho mình nhé!!!