Long CutX+Y=10(number of items)Also1.75x+2.00y=18.50(cost of each toffee and candy)Where x=candy's and y= number of toffee'sSolve these x=6 so y=10-6=4 becoz (x+y=10)Involves much calculation See next Post for Short Cut.
ShortcutIf I had bought 10 toffees it would have cost me Rs 20.00 in total. Since 10 × Rs 2.00 = Rs 20.00.I only spent Rs 18.50 and therefore spent Rs 1.50 less. Each candy is Rs 0.25 less than toffee.Therefore I need to adjust my difference with difference of themSo I bought 6 candies since Rs 1.50/Rs 0.25 = 6Therefore the other 4 items were toffees.So I bought 4 toffees and 6 candies.You can check it6*1.75+4*2.00=Rs 18.50
Long Cut
ReplyDeleteX+Y=10(number of items)
Also
1.75x+2.00y=18.50(cost of each toffee and candy)
Where x=candy's and y= number of toffee's
Solve these x=6 so y=10-6=4 becoz (x+y=10)
Involves much calculation See next Post for Short Cut.
Shortcut
ReplyDeleteIf I had bought 10 toffees it would have cost me Rs 20.00 in total. Since 10 × Rs 2.00 = Rs 20.00.
I only spent Rs 18.50 and therefore spent Rs 1.50 less. Each candy is Rs 0.25 less than toffee.
Therefore I need to adjust my difference with difference of them
So I bought 6 candies since Rs 1.50/Rs 0.25 = 6
Therefore the other 4 items were toffees.
So I bought 4 toffees and 6 candies.
You can check it
6*1.75+4*2.00=Rs 18.50