Q1) Find the ratio of:
(a) Rs. 5 to 50 paise
(b) 15 kg to 210 g
(c) 9 m to 27 cm
(d) 30 days to 36 hours
Q2) In a computer lab, there are 3 computers for every 6 students. How many computers will be needed for 24 students?
Population of Rajasthan = 570 lakhs and population of UP = 1660 lakhs. Area of Rajasthan = 3 lakh km2 and area of UP = 2 lakh km2.
How many people are there per km2 in both these States?
Q3) Population of Rajasthan = 570 lakhs and population of U.P. = 1660 lakhs. Area of Rajasthan = 3 lakh km^2 and area of U.P. = 2 lakh km^2.
(i) How many people are there per km2 in both states?
(ii) Which state is less populated?
Q1) Convert the given fractional numbers to percent:
Q5) Find the whole quantity if:
(a) 5% of it is 600
(b) 12% of it is Rs. 1080
(c) 40% of it is 500 km
(d) 70% of it is 14 minutes
(e) 8% of it is 40 liters
Q6) Convert given percents to decimal fractions and also to fractions in simplest forms:
Q7) In a city, 30% are females, 40% are males and the remaining are children. What percent are children?
Q8) Out of 15,000 voters in a constituency, 60 voted. Find the percentage of voters who did not vote. Can you now find how many actually did not vote?
Tell what is the profit or loss in the following transactions. Also find profit percent or loss per cent in each case.
A refrigerator bought for ₹ 12,000 and sold at ₹ 13,500.
Q1) Tell what is the profit or loss in the following transactions. Also find profit percent or loss percent in each case.
(a) Gardening shears bought for Rs. 250 and sold for Rs. 325.
(b) A refrigerator bought Rs. 12,000 and sold at Rs. 13,500.
(c) A cupboard bought for Rs. 2,500 and sold at Rs. 3,000.
(d) A skirt bought for Rs. 250 and sold at Rs. 150.
Q4) Arun bought a car for Rs. 3,50,000. The next year, the price went up to Rs. 3,70,000. What was the percentage of the price increase?
Q6) Juhi sells a washing machine for Rs. 13500. She loses 20% in the bargain. What was the price at which she bought it?
Q7) (i) Chalk contains Calcium, Carbon, and Oxygen in the ratio 10 : 3: 12. Find the percentage of
Carbon in chalk.
(ii) If in a stick of chalk, Carbon is 3 g, what is the weight of the chalk stick?
Chalk contains calcium, carbon and oxygen in the ratio 10:3:12. Find the percentage of carbon in chalk.
Q9) Find the amount to be paid at the end of 3 years in each case:
(a) Principal = Rs. 1,200 at 12% p.a.
(b) Principal = Rs. 7,500 at 5% p.a.
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