# IGCSE Mathematics Paper-1: Specimen Questions with Answers 241 - 245 of 324

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## Question 241

### Write in Short

Factories completely .

### Explanation

• The common factor is
• Factor it out:

## Question 242

Edit

### Write in Short

In Gujarat, a bus leaves Surat at 9: 30 and arrives in Ahmedabad at 12: 50.

The distance from Surat to Ahmedabad is 450 kilometers. Calculate, in kilometers per hour, the average speed for the journey.

### Explanation

• Total time of journey = 3 hours
• Total distance = 450 kilometers

## Question 243

### Write in Short

A school has 400 students.

The table shows the number of students attending school in one week.

 Monday Tuesday Wednesday Thursday Friday 370 380 350 340 390

For these values,

iii. Find the range.

### Explanation

In a data set of

The lowest value is 370.

And the highest value is 390.

Therefore

## Question 244

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### Write in Short

The population of Latvia in 1989 was 30,00, 000. In 1994 it was 26,00, 000.

Calculate the percentage decrease in the population between 1989 and 1994.

### Explanation

• Population of Latvia in 1989 = 3000000
• Population of Latvia in 1994 = 2600000

Therefore,

## Question 245

Edit

### Write in Short

In Gujarat, a bus leaves Surat at 9: 30 and arrives in Ahmedabad at 12: 50.

How long, in hours and minutes, does the journey take?

### Explanation

A bus leaves Surat at 9:30

Arrives in Ahmedabad at 12: 50

So,

9: 30 to 10: 00 = 30 minutes

10: 00 to 12: 00 = 2 hours

12: 00: to 12: 30 = 30 minutes