A grocer wants to mix nuts which sell for Rs 40 per kilo with nuts which sell Rs 90 per kilo in order to make a mixture which could sell for Rs 70 per kilo.How many kilos of each should be mixed to get a mixture of 630 kilos?

Answer 1

amount used from the Rs 40 --- x
amount used from the Rs 90 --- 630-x

40x + 90(630-x) = 70(630)
40x + 56700 - 90x = 44100
-50x= -12600
x = 252

state conclusions.

Answer 2

A grocer wants to mix nuts which sell for Rs.14.40 per kilo with nuts selling for Rs.22.80 per kilo in order to make a mixture which would sell for Rs.18 per kilo.How many kilos of Rs.22.80 per kilo nuts should be mixed with 40 kilos of Rs.14.40 per kilo nuts?