West Bengal Board Solutions for Chapter: Proportion, Exercise 7: Let's workout

Find the ratio of the red and green squares.

Find the ratio of the brown and yellow squares.

Which four of the coloured squares are in the same proportion?

In two types of 'sherbat', the ratio of syrup and water is $2:5$ and $6:10$. Which one of the sherbat is sweeter?

When water freezes to ice, its volume increases by $10\%$. Find the ratio of a certain volume of water and its corresponding volume of ice.

My age is $12$ years and my father's age is $42$ years. Find the ratio of my age to my father's age.

The ratio of story books and textbooks of Preetam is $2:5$. If Preetam has $4$ story books, the find how many books he has.

For making a flower garland of china roses and Indian marigold, $105$ of these flowers were collected. If the ratio of china roses and Indian marigold is $3:4$, find how many china roses and Indian marigold are there. Also, find how many more china roses must be collected so that the ratio of these two types of flowers become equal.