A carton has twenty chocolates worth rupees 100. The carton consists of Cadbury shots worth rupees 3 each and 5 star worth rupees 11 each. How many 5 star chocolates are there in the carton? [4 MARKS]
Visualizing the equation : 2 Marks
Steps : 1 Mark
Result : 1 Mark
Let the no. Of Cadbury shots =y
Then no. of 5 star chocolates =20−y
As given in question, Cadbury shots worth rupees 3 and 5 star worth rupees 11.
Total cost of Cadbury shots is
=No. of shots×cost of each=3×y=3y
Total cost of 5 star is
=No. of 5 star×cost of each=(20−y)×11=220−11y
Total worth of chocolates in carton =100
⇒3y+220−11y=100
⇒220−100=11y−3y
⇒120=8y
⇒y=15
There are 15 Cadbury shots and 5 5 stars.