How to do the second question on page 40

How to do the second question on page 40

Set up a fruit shop to deliver x kg mango
5X-X=60
（5-1）X=60
4X=60
4X/4=60/4
x=15

Answers to synchronous exercises on page 49 in fifth grade mathematics volume 1

1. The bottom of a parallelogram is the sum of the top and bottom of a trapezoid, and the height of a parallelogram is the original height of the trapezoid. 2. Two identical trapezoids can be combined into a parallelogram. 21.4283.560.6

Synchronous exercises in fifth grade mathematics volume 1 60 pages and 61 answers
Come on, I want the synchronous exercises of grade 5 math Volume 1, 60 pages and 61 and 62 answers. The answers to the development exercises don't just need basic training. Come on, good Samaritan, help me. What page and what course do you want to explain
Don't say it's on my own. I'm tired of listening to it. I won't give any points

I really want to help you, but do you have any questions
I don't have your book, so I can't answer it

According to the statistics of the increase in the number of TVs used by people from 1999 to 2000, it was 350 in 1999, 600 in 2000, 1000 in 2001, 1600 in 2002 and 2500 in 2003. How many TVs were added in 2004? How many TVs were added in 2005?

600-350=250
1ooo-600=400
1600-1000=600
2500-1600=900
2500 + 700 = 3200, so 3200 in 2004
3200 + 800 = 4000 units, so 4000 units in 2005

The circumference of a rectangle is 40 decimeters, which is twice the width. What's its area

40 divided by 2 = 20

Two fifths = [] cm], three fourths = [] day, three eighths of hectare = [] square meter, three twentieth = [] gram
Two fifths square meter = [] square decimeter

Two fifths of a meter = [40] cm
35 = [7 / 12]
3 / 4 hours = [1 / 32] days
Three eighths of a hectare = [3750] square meters
3000 g / 20 = [150] g
Two fifths square meter = [40] square decimeter

A train is 155 meters long and has to pass the 745 meter long railway bridge. The train travels 20 meters per second. How long does it take from the front of the train to the rear of the train

(155 + 745) divided by 20 = 45 seconds

There is a rectangle 5 cm long and 2 cm wide. Take the length of the rectangle as the axis of symmetry, rotate the rectangle to get a cylinder. What is the volume of the cylinder?

3.14 × 22 × 5 = 3.14 × 4 × 5 = 62.8 (cubic centimeter) a: the volume of this cylinder is 62.8 cubic centimeter

999 square + 999 can be divided by 1000

The square of 999 + 999 = 999 * 999 + 999 = 999 * (999 + 1) = 999 * 1000. So the square of 999 + 999 can be divided by 1000 = 999

A mobile communication company in a city has set up two kinds of communication services: the user of globetron pays 50 yuan monthly basic fee first, and then pays 0.2 yuan for each minute of the call; the user of Shenzhouxing does not pay the monthly basic fee, and pays 0.4 yuan for each minute of the call
(1) Use the formula with X to show the cost of two call modes in one month
(2) How many minutes to talk in a month? The cost of the two methods is the same
(3) If someone expects to spend 120 yuan a month, which one is more cost-effective?

(1) GLOBCOM: 50 + 0.2 * x
China Travel: 0.4x
(2) If 50 + 0.2x = 0.4x, x = 250
(3)50+0.2*120=74
0.4*120=48
Choose China travel more preferential!