# IGCSE Mathematics Paper-1: Specimen Questions with Answers 10 - 14 of 175

## Question number: 10

### Write in Short

Solve as a single fraction.

### Explanation

Here,

## Question number: 11

### Write in Short

Harsh’s height is 185 cm, to the nearest centimeter. Complete the statement about the limits of his height.

### Explanation

Here, He is greater than or equal to 184.5 centimeters but less than 185.5 centimeters.

In mathematical form:

## Question number: 12

### Write in Short

The River Nile is 6700 kilometers long in nearest hundred kilometers. What can be said about the length, L kilometers, of the River Nile.### Explanation

Here, The River Nile is 6700 kilometers long.

- So, nearest hundred kilometers can be 6600 km and 6800 km.
- So, the statement about the length can be:

## Question number: 13

### Describe in Detail

Solve with detailed working:

(a)

(b)

### Explanation

Here,

(a) Left Hand Side (LHS) =

Right Hand Side (RHS) =

Thus, LHS = RHS.

(b) Left Hand Side (LHS) =

Right Hand Side (RHS) =

Thus, LHS = RHS.

## Question number: 14

### Describe in Detail

Aisha bought 30 meters of cloth at a cost of . She sold 25 meters of the cloth at per meter and 5 meters at per meter.

(a) Calculate the profit she made.

(b) Calculate this profit as a percentage of the original cost.

### Explanation

Here, Aisha bought 30 meters of cloth at a cost of .

So, cost price CP =

Now, she sold 25 meters of the cloth at per meter:

She sold 5 meters at per meter:

So, total selling prices SP =

(a)

(b) Percentage of profit of the original cost :

So,

Then,