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 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 2
A group of 50 girls and 20 boys took part in a Mathematics test. The average score of the girls was 50 points. While the average score of the boys was 64 points. What was the average score of all the students who participated in the test?

Level 2
The average height of 3 children was 1.32 m. One of the children, whose height was 1.3 m, left the group. What was the average height of the remaining children?

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 2
A group of 5 pupils scores an average of 83 marks in a test. When a new pupil joins the group, their average score decreases to 79 marks. How many marks does the new pupil score?

Level 2
The average height of six students is 125 cm. If the average height of five students is 120 cm, find the height of the sixth pupil.

Level 3
Jolene and Katie shared some necklaces. Jolene's share was 45% of Katie's share. She then increased her share of the necklaces by taking 20% of Katie's share. Given that Jolene had 18 fewer necklaces than Katie in the end, how many necklaces did the girls have altogether?

Level 3
At first, Beaker A and Beaker B contained 0.6 ℓ and 1.6 ℓ of water respectively. Some water from Beaker B was poured into Beaker A with no water spilling over. In the end, there was as much water in Beaker A as in Beaker B. How much water was poured from Beaker B to Beaker A?

Level 2
The ratio of Adam's money to Bryan's money is 4 : 3.
The ratio of Bryan's money to Chris' money is 2 : 1.
The total amount that they have is $510.
How much more money does Adam have than Chris?