Current location - Training Enrollment Network - Mathematics courses - [Answer quickly and give 15 points] (Difficult) Elementary Five Maths Problem
[Answer quickly and give 15 points] (Difficult) Elementary Five Maths Problem
1, there are x children, do the equation.

2X+ 12=3X-2

X= 14

So, there are 14 children and 40 sweets.

2. If X trees are planted in the fourth level, then (3X- 1) trees are planted in the sixth level and (2X+3) trees are planted in the fifth level.

x+(3X- 1)+(2x+3)= 1 10

X= 18

Therefore, there are 18 strains in Grade 4, 39 strains in Grade 5 and 53 strains in Grade 6.

3. Set a towel X yuan and a soap Y yuan, and make an equation.

2X+3Y= 18

3X+2Y= 19

Solution, X=4.2, Y=3.2.

So X+Y=7.4 yuan.

A towel and a bar of soap, 7.4 yuan.