question_answer

Cost of 5 kg. of wheat is Rs. 30.50

(a) What will be the cost of 8 kg of wheat?

(b) What quantity of wheat can be purchased in Rs. 61?

Answer:

(a)   Cost of 5 kg wheat = Rs. 30.50 Cost of 1 kg wheat \[=Rs.\frac{30.50}{5}\]                             \[=Rs.6.10\] Cost of 8 kg wheat \[=Rs.(6.10\times 8)=Rs.\,48.80\]                                                                                                                                                               (b) For Rs. 30.50; wheat purchased = 5 kg For Rs. 1; wheat purchased \[=\frac{5}{30.50}kg\]                                     \[=\frac{500}{3050}=\frac{10}{61}kg\] For Rs. 61; wheat purchased \[=\frac{10}{61}\times 61\,\,kg\]                                     \[10\,\,kg\]