Question:

Farmer Nick has 4 rabbits. The mass of Rabbit G is the same as the average mass of the 4 rabbits. Rabbit H weighs 5 kg less than the average mass of the 4 rabbits. The mass of Rabbit I is 7 kg more than the average mass of the 4 rabbits. The mass of Rabbit J is 34 kg. Find the total mass of the 4 rabbits.

3 m
A shop sold three brands of pens: Brand A, Brand B and Brand C. The bar graph shows the number of pens sold for each brand in one day.

- How many pens were sold altogether?
- The shop collected $270 from selling the pens. The prices of Brand A, Brand B, and Brand C pens were in the ratio 1 : 2 : 3. How much money was collected from selling Brand B pens?

2 m

Natalie has 3 times as many buttons as Xuan. Xuan has ^{2}_{3} as many buttons as Fiona. If the three of them have a total of 110 buttons, how many buttons does Natalie have?

2 m
The ratio of the number of banana muffins to strawberry tarts is 3 : 5. The ratio of the number of kaya cookies to the total number of banana and strawberry tarts is 5 : 1. What fraction of the tarts are strawberry tarts?

2 m
The ratio of Henry's age to Mark's age is 9 : 5. Last year, their average age is 20. How old will Mark be in 5 years' time?

2 m
At a zoo, ^{1}_{4} of the visitors were men. The remaining visitors were women and children in the ratio of 1:3. If there were 150 more children than men. How many visitors were there at the zoo?

2 m
At a concert, ^{2}_{7} of the parents is equal to ^{3}_{5} of the kids. What is the ratio of kids to parents?

2 m
1104 people attended a park. ^{3}_{8} were adults. Some children left halfway and the ratio of the number of adults to the number of children became 6 : 7. How many children left the park halfway?

2 m
In a room, ^{5}_{7} of the girls wore cardigans. After 86 girls who wore cardigans left the room, the percentage of girls who wore cardigans decreased to 10%. How many girls in the room did not wear cardigans?

2 m
Fill in the blanks.

Number of boys at first is 30% of the children.

Number of boys is then increased to 40%.

4 m
Number of boys at first is 30% of the children.

Number of boys is then increased to 40%.

- Number of boys at first = _____ u
- Number of boys in the end = _____ u
- Increase in the number of boys = _____ u
- Number of children in the end = _____ u