Avg cost of 2 cakes and 3 cookies is Rs.30.The avg cost of 5 cakes and 7 cookies is Rs.72. Find the total cost of 30 cakes and 30 cookies?  Choose the correct answer
A) 190 B) 160 C) 130 D) 200 E) 180
Avg cost of 2 cakes and 3 cookies is Rs. 30   (2 cake + 3 cookies) 5=30   therefore 1 cake cost is   30/5= 
<gadget id="calculator">  30/5</gadget>
<output>6</output>
6, so 2 cake cost is 2x6=12 and 3 cookies cost is 3x6=18   Again, avg cost of 5 cakes and 7 cookies is Rs.72   (5 cake + 7 cookies) 12=72   therefore 1 cake cost is   72/12= 
<gadget id="calculator">  72/12</gadget>
<output>6</output>
6, so 5 cake cost is 5x6=30 and 7 cookies cost is 7x6=42   So 30 cake cost is (30/a)=180 and 30 cookies cost is (30x6)=180   ANSW180R:180
<result>E</result>
Avg cost of 2 cakes and 3 cookies is Rs.30.The avg cost of 5 cakes and 7 cookies is Rs.72. Find the total cost of 30 cakes and 30 cookies?