Questions by Arun

0 votes

0 answers

Shikha has an order from a golf course designer to put palm trees through a `(xx 2^3)` machine and then through a `(xx 3^3)` machine. She thinks she can do the job with a single repeater machine. What single repeater machine should she use?

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Long back in ancient times, a farmer saved the life of a king’s daughter. The king decided to reward the farmer with whatever he wished. The farmer, who was a chess champion, made an unusal request: “I would like you to place 1 rupee on the first square of my chessboard, 2 rupees on the second square, 4 on the third square, 8 on the fourth square, and so on, until you have covered all 64 squares. Each square should have twice as many rupees as the previous square.” The king thought this to be too less and asked the

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

By what number should `(–15)^(–1)` be divided so that the quotient may be equal to

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

By what number should `(–8)^(–3)` be multiplied so that that the product may be equal to

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Simplify:

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Amna purchased a toy for Rs 660 including sales tax. If the rate of sales tax is 10%, then the selling price of the toy is

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Suppose for the principal P, rate R% and time T, the simple interest is S and compound interest is C. Consider the

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Radhika bought a car for Rs 2,50,000. Next year its price decreased by 10% and further next year it decreased by 12%. In the two years overall decrease per cent in the price of the car

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The time period after which the interest is added each time to form a new principal is called the

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The discount on an item for sale is calculated on the

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

The original price of a shampoo bottle bought for Rs 324 if 8% VAT is included in the price is Rs

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

In 1975, the consumption of water for human use was about 3850 cu.km/year. It increased to about 6000 cu.km/year in the year 2000. Find the per cent increase in the consumption of water from 1975 to 2000. Also, find the annual per cent increase in consumption (assuming water consumption increases

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Babita bought 160 kg of mangoes at Rs 48 per kg. She sold 70% of the mangoes at Rs 70 per kg and the remaining mangoes at Rs 40 per kg. Find Babita’s gain or loss per cent on the whole

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

A shopkeeper was selling all his items at 25% discount. During the off season, he offered 30% discount over and above the existing discount. If Pragya bought a skirt which was marked for Rs 1,200, how much did she pay for

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

A store is having a 25% discount sale. Sheela has a Rs 50 gift voucher and wants to use it to buy a board game marked for Rs 320. She is not sure how to calculate the concession she will get. The sales clerk has suggested two ways to calculate the amount payable. - Method 1: Subtract Rs 50 from the price and take 25% off the resulting price. - Method 2: Take 25% off the original price and then subtract Rs 50. a. Do you think both the methods will give the same result? If not, predict which method

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

During school hours, Neha finished 73% of her homework and Minakshi completed 5/8 of her homework. Who must finish a greater per cent of

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Rain forests are home to 90,000 of the 2,50,000 identified plant species in the world. What per cent of the world’s identified plant species are found in rain

asked Jan 17, 2022 in 8th-maths

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

0 votes

0 answers

Side of a rhombus and its perimeter are in ______

asked Jan 17, 2022 in 8th-maths

0 votes

0 answers

Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and

asked Jan 17, 2022 in 8th-maths

Questions by Arun

Categories