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If principal = Rs 1,00,000. rate of interest = 10% compounded half yearly. Find Amount after one
asked
Jan 17, 2022
in
8th-maths
marks2
chapter9
#sub
0
votes
0
answers
What price should a shopkeeper mark on an article that costs him Rs 600 to gain 20%, after allowing a discount of
asked
Jan 17, 2022
in
8th-maths
marks3
chapter9
#sub
0
votes
0
answers
Music CD originally priced at Rs 120 is on sale for 25% off. What is the S.P.? Sonia and Rahul have different ways of calculating the sale price for the items they bought. As you work on the next problem, try both of these methods to see which you
asked
Jan 17, 2022
in
8th-maths
marks4
chapter9
#sub
0
votes
0
answers
Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun. 1. A sunscreen with SPF 15 allows only `1/15` of the sun’s UV rays. What per cent of UV rays does the sunscreen abort? 2. Suppose a sunscreen allows 25% of the sun’s UV rays. a.
asked
Jan 17, 2022
in
8th-maths
marks4
chapter9
#sub
0
votes
0
answers
The human body is made up mostly of water. In fact, about 67% of a person’s total body weight is water. If Jyoti weights 56 kg, how much of her weight is
asked
Jan 17, 2022
in
8th-maths
marks4
chapter9
#sub
0
votes
0
answers
A car covers a distance in 40 minutes with an average speed of 60 km per hour. The average speed to cover the same distance in 30 minutes
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#mcq
0
votes
0
answers
If the cost of 10 pencils is Rs 90, then the cost of 19 pencils is Rs
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#tnf
0
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0
answers
Which quantities in the previous question vary inversely with each
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#mcq
0
votes
0
answers
Both x and y are in direct proportion, then `1/x` and `1/y`
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#mcq
0
votes
0
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Two quantities x and y are said to vary directly with each other if for some rational number k, xy =
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#tnf
0
votes
0
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When the distance is kept fixed, speed and time vary directly with each
asked
Jan 17, 2022
in
8th-maths
marks1
chapter13
#tnf
0
votes
0
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(i) The time taken by a train to cover a fixed distance and the speed of the train. (ii) The distance travelled by CNG bus and the amount of CNG used. (iii) The number of people working and the time to complete a given work. (iv) Income tax and the income. (v) Distance travelled by an auto-rickshaw and time
asked
Jan 17, 2022
in
8th-maths
marks2
chapter13
#sub
0
votes
0
answers
In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the
asked
Jan 17, 2022
in
8th-maths
marks2
chapter13
#sub
0
votes
0
answers
The cost of 27 kg of iron is Rs 1,080, what will be the cost of 120 kg of iron of the same
asked
Jan 17, 2022
in
8th-maths
marks2
chapter13
#sub
0
votes
0
answers
The following table shows the distance travelled by one of the new eco-friendly energy-efficient cars travelled on gas. Litres of gas 1 0.5 2 2.5 3 5 Distance (km) 15 7.5 30 37.5 45 75 Which type of properties are indicated by the table? How much distance will be covered by the car in 8 litres of
asked
Jan 17, 2022
in
8th-maths
marks3
chapter13
#sub
0
votes
0
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Many schools have a recommended students-teacher ratio as 35:1. Next year, school expects an increase in enrolment by 280 students. How many new teachers will they have to appoint to maintain the students-teacher
asked
Jan 17, 2022
in
8th-maths
marks3
chapter13
#sub
0
votes
0
answers
A circle of maximum possible size is cut from a square sheet of board. Subsequently, a square of maximum possible size is cut from the resultant circle. What will be the area of the final
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
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0
answers
The dimensions of a godown are 40 m, 25 m and 10 m. If it is filled with cuboidal boxes each of dimensions `2 m xx 1.25 m xx 1 m`, then the number of boxes will
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
The surface areas of the six faces of a rectangular solid are 16, 16, 32, 32, 72 and 72 square centimetres. The volume of the solid, in cubic centimetres,
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#mcq
0
votes
0
answers
The surface area of a cylinder which exactly fits in a cube of side b is
asked
Jan 17, 2022
in
8th-maths
marks1
chapter11
#fib
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