SMT_ Khối 5_Week 25_Lesson 2

The ratio of apples to oranges in a basket is 5:3. If there are 120 fruits in total, how many apples and oranges are there?

• A. 75 apples, 45 oranges

• B. 60 apples, 60 oranges

• C. 50 apples, 70 oranges

• D. 80 apples, 40 oranges

A bag contains red and blue marbles in the ratio 2:7. If there are 54 marbles in total, how many are red?

• A. 12 red

• B. 14 red

• C. 6 red

• D. 18 red

The total number of birds in a sanctuary is 8400, and the ratio of parrots to peacocks is 3:4. How many parrots and peacocks are there?

• A. 3000 parrots and 5400 peacocks

• B. 2400 parrots and 6000 peacocks

• C. 4200 parrots and 4200 peacocks

• D. 3600 parrots and 4800 peacocks

The ratio of boys to girls in a class is 3:4. If there are 15 boys, how many girls are there?

• A. 16

• B. 20

• C. 24

• D. 18

A 48-meter rope is cut into two parts in the ratio 5:3. What is the length of the longer part?

(a)  

A school has a total of 480 students, and the ratio of boys to girls is 3:5. Find the number of boys and girls.

• A. Total parts: 2 There are 160 boys and 320 girls

• B. Total parts: 5 There are 200 boys and 280 girls

• C. Total parts: 8 There are 180 boys and 300 girls

• D. Total parts: 15 There are 225 boys and 255 girls

The total length of two ropes is 84 meters, and their lengths are in the ratio 5:2. What is the length of each rope?

• A. 60 meters and 25 meters

• B. 50 meters and 34 meters

• C. 70 meters and 14meters

• D. 60 meters and 24 meters

A farmer has chickens and ducks in the ratio of 3:2. If the total number of birds is 150, how many chickens and ducks does the farmer have?

• A. 90 chickens and 60 ducks

• B. 75 chickens and 75 ducks

• C. 60 chickens and 90 ducks

• D. 100 chickens and 50 ducks

A company has a total of 6,400 employees, and the ratio of male to female employees is 3:5. Find the number of male and female employees.

• A. Total parts: 5

  There are 3200 male and 3200 female employees

• B. Total parts: 15

  There are 1920 male and 4480 female employees

• C. A. Total parts: 8

  There are 2400 male and 4000 female employees

• D. A. Total parts: 2

  There are 1600 male and 4800 female employees

The ratio of students to teachers in a school is 4:1. If there are 1000 students, then there are (a)   teachers.