Question

Find the cost of $1kg$ cake, if the cost of $400g$ cake is $Rs190$.

Answer 1

$1$ kg$=1000$ g

$400$g $\to$ Rs. $190$

$1$ g $\to$ Rs. $\frac{190}{400}$

$1000$ g $\to$ Rs. $\frac{190}{400}\times 1000=475$Rs.