Q&Answers: Math/Chemistry/Physics Problems + Solutions

A grocer has a sale of Rs. 5921, Rs.

Four packages have an average weight of 14.5 pounds.

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75.

If the operation ∆ is defined by a ∆ b = (b - a)^2/a^2 for all numbers a and b, and a ≠ 0, then what is the result when we evaluate this expression: (-4) ∆ (4 ∆ −4) ?

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In a sample of Christ college students, 30 percent are third year students and 90 percent are not second-year students.

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A monkey climbs 30 feet at the beginning of each hour and rests for a while when he slips back 20 feet before he again starts climbing in the beginning of the next hour.

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An article costing rs.160 is sold at 15% discount on a mark-up price.

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For dinner at a restaurant, there are x + 1 choices of appetizers, y + 1 main courses, and z choices of dessert.

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In a race of length L metres, Johnson beats Lewis by X metres and Greene by Y metres, By how many metres does Lewis beat Greene in the same race ?

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A green grocer received a boxful of tomatoes and on opening the box found that several had gone bad.

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Find the perimeter and area of the rectangle of length 15 cm and breadth 13 cm.

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6 points are marked on a straight line and another 7 points are marked on a second straight line with no points in common.

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A Contractor employed a certain number of workers to finish constructing a road in a certain scheduled time.

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A train running at the speed of 120 km/hr crosses a pole in 18 seconds.

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In an examination, 25% of total students failed in Hindi, 40% failed in English and 35% in both.

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A set of 11 positive integers has an average of 20.

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How many E ways can Jason sit with his five friends in a row of six seats with an aisle on either side of the row, if Jason insists on sitting next to one of the aisles?

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In a certain shop , 70 percent of customers buy mobiles made by company (A) and the rest buy mobiles made by company (B) .

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A customer pays 30 dollars for a coffee maker after a discount of 20 dollars

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A dishonest dealer professes to sell goods at the cost price but uses a weight of 750 grams per kg, what is his percent?

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Of the land owned by a farmer, 90 percent was cleared for planting.

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A man is 18 years older than his son.

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A worker makes a toy in every 2h.

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What is the normal price of an article sold at $108 after two successive discounts of 10% and 20%?

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