Level 1
The average cost of a duck and 6 turkeys is $10.20. The average cost of each turkey is $9.90. How much does the duck cost?

Level 3
During her shopping trip, Samantha bought three different types of pens, X, Y and Z in the ratio of 4 : 2 : 5. She decided to sell them at the prices listed as shown.

Pen X: $1.20
Pen Y: $0.85
Pen Z : $0.60

Given that Samantha bought a total 451 pens, how much did Samantha collect from the sale of all the pens?

Level 3
At the school's annual band concert, 40% of the students were from upper primary and the rest were from lower primary. The entrance fee to the concert for each upper primary student and each lower primary student was $8 and $6 respectively. The total entrance fees collected for all the tickets was $5440. How many students were at the concert?

Level 3
Adam and Bryan have a total of $130.
Adam spends ¹₃ of his money and
Bryan spends ¹₂ of his money.
They spend $50 altogether.

1. How much does Adam have at first?
2. How much does Bryan have in the end?

Level 1
A family's average monthly spending for August and September was $713. Their average monthly spending from October to December was $824. What was their total spending from August to December?

Level 3
At the school's recent donation drive, for every $1 donated by a child, an adult donated twice the amount. There were 5 times as many children as adults who were at the event. There were ²₃ times as many girls as boys at the event. Given that a total amount of $1470 was collected during the event, how many girls were at the event?

Level 2
The price of an apartment when rounded off to the nearest $1000 is $90000. What is the greatest possible price of the car if it has been round off to the nearest thousand?

Level 3
Zara baked vanilla, chocolate and red velvet macarons. There were half as many red velvet macarons as chocolate macarons and an equal number of red velvet macarons as vanilla macarons. The cost of each macaron is given as shown.

1 red velvet macaron: $1.10
1 chocolate macaron: $1.40
1 vanilla macaron: $1.20

If she collected $153 from selling all the macarons, how many chocolate macarons were there?

Level 3
A fruit vendor ordered some fruits. 35% of the fruits he ordered were apples and the rest were oranges. Each apple cost $1.20 and each orange cost 50% more than each apple. The vendor paid a total of $636.

1. Find the total cost of the apples.
2. How many oranges did he order?

Level 3
At first, Adelyn had $154 and Eunice had $298. Then Eunice spent $89 on a pair of jeans and Adelyn received $200 from her grandfather. In the end, what is the ratio of the amount of money Adelyn had to the amount of money Eunice had? Give your answer in the simplest form.