P5: ratio: mutual, physical incr/decr

P5: incentive bonus

P5: reward n penalty

P5: money: non-mutual, physical incr/decr

P5: fraction / ratio / average : fractional matching

P5: fraction: mutual, physical incr/decr

P5: fraction: non-mutual, fractional incr/decr

P5: percentage: multiple percentages n references

P5: fraction: fractional matching

P5: volume

P5: average (finding number of elements from average)

Fwd: Fraction question from onsponge

Q18) Mdm Ang bought some highlighters, pens and mechanical pencils. 1/4 of them
were highlighters. The number of pens she bought was 6 more than 1/2 the total number of all the items and the remaining were mechanical pencils. Each of the highlighter, pens and mechanical pencils cost $2.10, $4.05 and $1.60 respectively. She spent a total of $227.10 on all the items. How many pens did she buy altogether?
 
http://www.onsponge.com/forum/35-thinkingmathonsponge/5769-urgent-fraction-question-psle-tommorow.html

Ans: 42

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Regards,

Mr Chang C.L.

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http://MrChang.com

P5; interpreting table of info

P5: 8-point compass

P5: perimeter and ratio

P5: Rate: No. of cuts, no. of pieces, amount of time