Conversion of Word Statement to Mathematical Statement
Raghu's fathe...
Question
Raghu's father gave him ₹(3xy+x2) and his brother gave him ₹3(2x2+5xy), out of this he spent ₹(x2+2xy) on cricket kits, ₹(x2+xy) on clothes . If x = 2 and y = 3, then find the total amount left with him.
A
₹185
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B
₹210
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C
₹275
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D
₹268
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Solution
The correct option is B ₹210 The total amount received by Raghu is =₹(3xy+x2) + ₹3(2x2+5xy) =(7x2+18xy). Total amount Raghu spent =₹((x2+2xy)+(x2+xy) =₹(2x2+3xy) Amount of money left =₹(7x2+18xy) - (2x2+3xy), =₹(5x2+15xy). Substituting the value of x=2 and y=3 in the above expression, we get, ₹[5(2)2+15(2)(3)] = ₹210 Hence, the amount of money left with Raghu is ₹210.