# IGCSE Mathematics Paper-1: Specimen Questions with Answers 283 - 289 of 324

## Question 283

Edit

### Write in Short

Jaya sold 600 kg tomatoes for 5000 and earned a profit of 15 % . If she sold them at? 20 per kg, find her profit or loss.

### Explanation

• Selling price of 600 kg tomatoes is 5000 ₹
• Profit %= 15 %

Now,

New rate of selling is 20 ₹ /kg

New selling price of 600 kg tomatoes is

it՚s a profit

## Question 285

### Write in Short

Estimate the sum by first rounding each number to the nearest ten.

### Explanation

• First round each number to the nearest ten.

• The sum of the rounding each number

• The estimate is 2790.

## Question 286

### Write in Short

From the values listed above, write down

A square number.

### Explanation

Here given the value is

The equal value of is 0.082.

## Question 287

### Write in Short

.

Write as a column vector.

Here given the

## Question 288

### Write in Short

Write down the value of n each of the following statements.

### Explanation

• Here given the

• It is a scientific notation

Here

## Question 289

Edit

### Write in Short

What is the order of rotational-symmetry of an equilateral triangle?

### Explanation

• We have to check, how many times an equilateral triangle fits on to itself during a full rotation of 360 degrees.
• Please look at the images of the equilateral triangle in the order A, B and C.
• A is the original image. The images B and C are generated by rotating the original image A.
• When we look at the above images of equilateral triangle, it fits on to itself 3 times during a full rotation of 360 degrees.
• Hence, an equilateral triangle has rotational symmetry of order 3.

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