MEDIUM
MYP:4-5
IMPORTANT
Earn 100

Two different fruit juices are mixed together. 7 liters of the first fruit juice contains 60% apple juice, and 5 liters of the second fruit juice contains 30% apple juice. Find the percentage of the new mix that is apple juice.

Important Questions on Problem-Solving

MEDIUM
MYP:4-5
IMPORTANT
Chloe can type a story in 6 hours. If Molly helps her, they finish typing the story in 4 hours. Find how long it would take Molly to type the story on her own.
MEDIUM
MYP:4-5
IMPORTANT
Mary takes 8 days to do a full check of the library's online catalog. Her assistant takes 12 days. If they work together, determine the fraction of the catalog that is checked after 4 days.
MEDIUM
MYP:4-5
IMPORTANT

The number of hamsters in a pet store doubles each month. Today, there are 20 hamsters. Supposing that no hamster dies and no hamster gets sold, determine in how many months the store will have 640 hamsters.

MEDIUM
MYP:4-5
IMPORTANT

The number of hamsters in a pet store doubles each month. Today, there are 20 hamsters. If 10 hamsters are sold at the end of each month, after the number of hamsters double, find how many hamsters are left after 5 months.

HARD
MYP:4-5
IMPORTANT
Sacha picked some apples from a tree in her garden. She then gave some to her friends. To her first friend, she gave half the apples she had, plus 2 more. To her second friend, she gave half the apples she had left, plus 2 more. And she did the same thing for her third friend. After giving away all these apples, she had 1 apple left. Find how many apples she originally pick from the tree.
MEDIUM
MYP:4-5
IMPORTANT
A house and a piece of land are sold for 850 000. The house is sold for one and a half times as much as the land. Find how much the house sold for.