Question

a part of monthly expenses of a family is constant and the remaining varies with the price of wheat. when the price of wheat is Rs.250 the total monthly expenses of the family is Rs. 1000 and when it is Rs. 240 the total monthly expenses of the family becomes Rs. 980. find the total monthly expenses of the family when the cost of wheat is Rs. 350

Answer 1

hi
when the rate of wheat decrease by Rs10 then total expenses reduce by Rs20 therefore they take 2kg wheat
1000-250×2=500
500+350×2=1200
1200is the total expenses