mark up and mark down

i think this is the easiest topic in mat 108, the formula is easy to remember, this is the formula that are used to do this topic
mark up:R=C+M where R is retail price
C is cost price
M is mark up
mark down:MD=OP-NP where MD is mark down
OP is old retail price
NP is new retail price

simple interest

I think this is the hardest topic among the other topic in the syllibus because i'm not to good to use the formula, and i think i need to work harder for this topic,

pendapat aku tentang mat

mat aku rasa x ssah sngt klau slalu wat exercise, yg jdi prblem bgi sstngah student adalah sbab mlas wat ltihan(mcam aku la tu) tapi lpas dpat jwpan msti rasa puas