a) = 19/35

b) = 1/3

c) = 0

A) X= 40

B) X= 77

Nếu chiều dài lúc đầu là 100%vậy chiều dài lúc sau là 75%

Nếu chiều rộng lúc đầu là 100% vậy chiều rộng 125%

Ta có 75%=         125%=

Diện tích lúc đầu là:

100/100 x 100/100 =  1

Diện tích lúc sau là:

75/100 x 125/100 = 9375/10000

Diện tích giảm đi là:

1 - 9375/10000= 625/10000

Ta có        625/10000 = 6,25%

Diện tích hình chữ nhật ban đầu là:

40 : 6,25 x 100=640 (cm2)

                                                                            Đáp số:640 cm2

= 9 nhé

số bạn không tham gia tham quan của lớp 6H là:

35- 20= 15 (bạn)

Đ/S: 15 bạn

It was a Friday morning and all members of the family got up quite early to get ready for the trip. We hired a car and drove for about two hours to arrive in Hai Phong province then got on a ferry to reach the destination. In spite of feeling a little bit tired, we got really excited when the beautiful coastline and sparkling blue ocean appeared in front of our eyes. We booked a family room in a 3-star hotel, which was pretty large and luxurious. The first activity we were so eager to experience was swimming. Unfortunately, the waves were too big for us to swim but it was fun to jump over them anyway. At night time, it was great to take off our shoes and wander along the coastline. The wind carried the distinctive smell of the sea, giving us a sense of peace and relaxation. Early on the next day, I woke up at 5 o’clock to follow my mom to the local market. We also hired bicycles to get around and explore the neighborhood, as well as find a souvenir shop to buy some gifts for our friends. On the last day in Cat Ba, my family took part in a small trip around Lan Ha bay by boat to immerse ourselves in the spectacular natural beauty here. The most interesting experience we had on the holiday was enjoying dinner on a boat. Eating fresh food on the sea when the sun came down really went beyond my expectations. After three days, we returned home but could not forget the great time we spent there. It was definitely one of the best memories of mine and my family members’.

a) Cây lấy gỗ chiếm số phần trăm tổng số cây trong vườn:

b)

Trong vườn có số cây ăn quả là:

1000 − 540 = 460 (cây)

Tỉ số phần trăm của số cây ăn quả và số cây trong vườn là:

Đáp số: 54 % và 46 %