In mathematics the question word ofof can usually be translated into multiply.
So we have: 2/5color(red)(" of ")" tuition"25 of tuition
color(white)("dddddddddddd")color(red)(darr)dddddddddddd↓
color(white)("ddddddddd.")2/5color(white)(".")color(red)(xx)color(white)("d")" tuition" ddddddddd.25.×d tuition
But we are told the cost of the tuition is $2520$2520
So by substituting $2520 for the word 'tuition we have:
2/5xx$252025×$2520 which is the same as: 2xx($2520)/52×$25205
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color(blue)("Consider just the part "($2520)/5)Consider just the part $25205
I have just spotted something!
This is the same as cancel(2000)^400/cancel(5)^1+cancel(500)^100/cancel(5)^1+cancel(20)^4/cancel(5)^1 = 504
color(blue)("Putting it all back together")
So 2xx($2520)/5 = 2xx$504=$1008
