Level 3
A box containing 60 folders had a mass of 5.01 kg. A box containing 25 post-it-pads has a mass of 6.21 kg. The mass of each post-it-pad was thrice that of each folder. Find the mass of the empty box in grams.
Level 3
Marion had some red and pink marbles. If she gives away 16 red marbles, the number of red marbles will be 10% of the total number of marbles left. If she gives away 48 pink marbles, the number of red marbles will be 25% of the total number of marbles left.
Level 3
Serene spent 37 of her money on some pens. She spent 14 of the remaining money on a box of poster colors and 23 of what was left on some books.
What fraction of her money was left?
Given that the books cost $12 more than the box of poster colors, find the sum of money Serene had at first.
Level 3
When an ice box is packed with 25 identical bottles of soda, it has a mass of 18.4 kg. When the ice box is packed with 30 identical packets of milo, it has a mass of 7.5 kg. A bottle of soda weighs 470 g more than a packet of milo. What is the mass of the empty ice box in kg?
Level 3
Perry spent $162 on a jumpsuit. He spent 19 of his remaining money on a sweater. If he still had 49 of his money left, how much did he have at first?
Level 3 Some poles are placed along the perimeter of a rectangular court measuring 15 m by 12 m. The poles are placed equally apart. If the distance between each pole is 3 m, find the total number of poles used.
Level 3 Some poles are placed along the perimeter of a rectangular court measuring 15 m by 12 m. The poles are placed equally apart. If the distance between each pole is 3 m, find the total number of poles used.
Level 3
In a dance audition of 80 dancers, the average score was 58.5 points. Given that the average score of the female dancers was 64 points and that of the male dancers was 56 points, find the number of male dancers who participated in the audition.
Level 3
Risa had a sum of money. She spent $308 on a blouse and 58 of the remainder on a windbreaker. She was left with 110 of the original sum of money.
Level 3
Mrs Lu had a sum of money. She gave her daughter $246 and gave 14 of the money to her niece. She used 34 of the remaining money on a computer and was left with 16 of the amount she had at first. What was the sum of money she had at first?
