Fractions in Disguise

Express the following fractions as percentages. (i) 3/5 (ii) 7/14 (iii) 9/20 (iv) 72/150 (v) 1/3 (vi) 5/11

Nandini has 25 marbles, of which 15 are white. What percentage of her marbles are white? (i) 10% (ii) 15% (iii) 25% (iv) 60% (v) 40% (vi) None of these

In a school, 15 of the 80 students come to school by walking. What percentage of the students come by walking?

Pairs of quantities are shown below. Identify and write appropriate symbols '>', '<', '=' in the blanks. Try to do it without calculations. (i) 50% ___ 5% (ii) 5/10 ___ 50% (iii) 3/11 ___ 61% (iv) 30% ___ 1/3

Find the value of the following and also draw their bar models. (i) 25% of 160 (ii) 16% of 250 (iii) 62% of 360 (iv) 140% of 40 (v) 1% of 1 hour (vi) 7% of 10 kg

Surya made 60 ml of deep orange paint, how much red paint did he use if red paint made up 3/4 of the deep orange paint?

Pairs of quantities are shown below. Identify and write appropriate symbols '>', '<', '=' in the boxes. Visualising or estimating can help. Compute only if necessary or for verification. (i) 50% of 510 □ 50% of 515 (ii) 37% of 148 □ 73% of 148 (iii) 29% of 43 □ 92% of 110 (iv) 30% of 40 □ 40% of 50 (v) 45% of 200 □ 10% of 490 (vi) 30% of 80 □ 24% of 64

Fill in the blanks appropriately: (i) 30% of k is 70, 60% of k is ___, 90% of k is ___, 120% of k is ___. (ii) 100% of m is 215, 10% of m is ___, 1% of m is ___, 6% of m is ___. (iii) 90% of n is 270, 9% of n is ___, 18% of n is ___, 100% of n is ___. (iv) Make 2 more such questions and challenge your peers.

Fill in the blanks: (i) 3 is ___ % of 300. (ii) ___ is 40% of 4. (iii) 40 is 80% of ___.

Mariam's farm has a peculiar bull. One day she gave the bull 2 units of fodder and the bull ate 1 unit. The next day, she gave the bull 3 units of fodder and the bull ate 2 units. The day after, she gave the bull 4 units and the bull ate 3 units. This continued, and on the 99th day she gave the bull 100 units and the bull ate 99 units. Represent these quantities as percentages. This task can be distributed among the class. What do you observe?

Workers in a coffee plantation take 18 days to pick coffee berries in 20% of the plantation. How many days will they take to complete the picking work for the entire plantation, assuming the rate of work stays the same? Why is this assumption necessary?

The badminton coach has planned the training sessions such that the ratio of warm up: play: cool down is 10% : 80% : 10%. If he wants to conduct a training of 90 minutes. How long should each activity be done?

An estimated 90% of the world's population lives in the Northern Hemisphere. Find the (approximate) number of people living in the Northern Hemisphere based on this year's worldwide population.

A recipe for the dish, halwa, for 4 people has the following ingredients in the given proportions — Rava: 40%, Sugar: 40%, and Ghee: 20%. (i) If you want to make halwa for 8 people, what is the proportion of each of the above ingredients? (ii) If the total weight of the ingredients is 2 kg, how much rava, sugar and ghee are present?

If a shopkeeper buys a geometry box for ₹75 and sells it for ₹110, what is his profit margin with respect to the cost?

I am a carpenter and I make chairs. The cost of materials for a chair is ₹475 and I want to have a profit margin of 50%. At what price should I sell a chair?

The total sales of a company (also called revenue) was ₹2.5 crore last year. They had a healthy profit margin of 25%. What was the total expenditure (costs) of the company last year?

A clothing shop offers a 25% discount on all shirts. If the original price of a shirt is ₹300, how much will Anwar have to pay to buy this shirt?

The petrol price in 2015 was ₹60 and ₹100 in 2025. What is the percentage increase in the price of petrol? (i) 50% (ii) 40% (iii) 60%

Samson bought a car for ₹4,40,000 after getting a 15% discount from the car dealer. What was the original price of the car?