46 P5.RD.JM.17083225
Level 3
During her shopping trip, Samantha bought three different types of pens, X, Y and Z in the ratio of 4 : 2 : 5. She decided to sell them at the prices listed as shown.

Pen X: $1.20
Pen Y: $0.85
Pen Z : $0.60

Given that Samantha bought a total 451 pens, how much did Samantha collect from the sale of all the pens?
3 m
D 4 operations Ratio to units Money Number x value Units table
47 P5.ST.JC.18121091
Level 3
220 children are in a school.
14 of the boys and 15 of
the girls wear glasses.
50 children wear glasses.
  1. How many boys are there?
  2. How many girls are there?
  3. How many children do not wear glasses?
3 m
Fraction of a set Fraction to units Units table Units & parts Elimination
48 P5.RD.JM.17083232
Level 3
At the school's annual band concert, 40% of the students were from upper primary and the rest were from lower primary. The entrance fee to the concert for each upper primary student and each lower primary student was $8 and $6 respectively. The total entrance fees collected for all the tickets was $5440. How many students were at the concert?
3 m
Percent of a set Percent to units Money Number x value Units table
49 P5.ST.JC.18121092
Level 3
Adam and Bryan have a total of $130.
Adam spends 13 of his money and
Bryan spends 12 of his money.
They spend $50 altogether.
  1. How much does Adam have at first?
  2. How much does Bryan have in the end?
3 m
Fraction of a whole Fraction to units All change Units table Units & parts Elimination
50 P5.DA.JM.17083143
Level 1
The average of two numbers is 124 and the average of another set of two numbers is 262. Find the average of these four numbers.
2 m
Averaging out 2 averages Number x value Units table

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