Questions

From Best to Worst

171 P5.RA.JC.17083328

Level 3
There were 360 males and 400 females queueing up for a fan meeting. The ratio of the number of males to the number of females who left the queue was in the ratio 1 : 2. As a result, the ratio of the number of females became four times as many as the number of males who remained in the queue. How many people left the queue?

4 m

Attempt

172 P5.ST.JC.18160201

Level 3
In a school, there is a total of 400 people.
30% are adults.
The rest are children.
The number of boys and girls is in the ratio of 5 : 9.

What percentage of the people are boys?
How many girls are there?

3 m

Attempt

Ratio to units Finding percent Percent of a set Percent to units Combined repeated identity Remainder concept Units table Units manipulation

173 P5.RA.JC.17083327

Level 3
Hannah went shopping with 4 times the amount that Kelly brought. The ratio of the amount of money Kelly spent to the amount of money Hannah spent was 2 : 3. In the end, Kelly and Hannah had $12 and $108 respectively. How much did Kelly spend?

4 m

Attempt

Ratio to units Money Times as many All change Units table Units & parts Elimination

174 P5.RD.JM.17083189

Level 3
The number of red grapes is the same as the number of green grapes in a bag. After removing ¹₄ of the grapes, there were 36 red grapes and 54 green grapes left in the bag. Then another 20 red grapes and 20 green grapes were removed and there were ⁵₁₂ of the grapes left in the end. How many red grapes were removed altogether?

4 m

Attempt

Fraction of a set Equal stage before Working backwards Units table

175 P5.ST.JC.18121178

Level 2
Adam and Bryan have some money in the ratio of 2 : 5
After Adam receives $400,
the amount that Adam has becomes is ²₃ that of Bryan's.