Asked by Nina in Math

Yuan Ling had some $5 and $10 notes. The $5 and $10notes had a total value of $1260.
8 pieces of $10 notes were exchanged for $5notes for the same value. In the end, the number of $10 notes was the same as the $5 notes. What was the value of the $5 notes at first?

Asked by Farah in Science

Sue carried out an experiment to find out how the exposed surface area of water affects the rate of evaporation.She filled three containers , A,B and C, with water as shown below. She left the containers in the same room.

Asked by Joyce in Math

The average test score of a class was 71 marks. After four students who scored an average of 68 left the class, the average score of the remaining students became 73 marks. How many students were there in the class at first?

Asked by Joyce in Math

Song Jun had a basket of apples. He ate the same number of apples every day. After 2 days, he had 2/3 of the apples left. After another 3 days, he had 2 apples left. How many apples did he have at first?

Asked by Joyce in Math

2 workers can paint a room in one day. Assuming the workers paint at the same rate, how long would it take for 6 workers to paint two rooms?

Asked by Farah in Math

Triangle KLN is an equilateral triangle.Find MKN

Asked by Joyce in Math

Is this anwser correct?

Asked by Joyce in Math

Is this anwser correct?

Asked by Joyce in Science

My answer was 4 but the correct answer turned out to be 3. Please give me a through explanation, it will be appreciated.

Asked by George in Science

I need help

Asked by Joyce in Math

Kris had some pink, blue and green highlighters for sale in her bookshop. There were 48 more blue highlighters than green highlighters. She had 10 more pink highlighters than blue highlighters. After selling 3/4 of the blue highlighters and 1/2 of the green highlighters, there were 315 highlighters left. How many pink highlighters did Kris have.

Asked by Joyce in Math

John earned 5 points for every puzzle he solved on an online game. He earned a bonus of 50 points for every 8 puzzles he solved. John earned a total of 840 points at the end of the game. How many puzzles did he solve in the game?

Asked by Joyce in Science

What is the advantage of having many tiny tubes in the stem to transport water and food instead of just one tube?

Asked by Marcus in Math

Can you help me in this question?thank you!

Asked by Qistina in Math

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