# CIE Mathematics Paper-1: Specimen Questions 83 - 85 of 175

## Question number: 83

### Write in Short

Solve the equations

(a) ,

(b)

Here,

(a)

(b)

## Question number: 84

### Write in Short

A wire is 200 centimeters long. It has to be cut into equal lengths of centimeters. How many of these lengths can be cut from this wire?

### Explanation

Here, wire is of 200 centimeters and it cut into equal length of centimeters that means .

So, 1 wire = 200 centimeters

Then? wires = 8.33 centimeters

## Question number: 85

Essay Question▾

### Describe in Detail

Solve:

The diagram shows the route of a fishing boat. The boat sails from A to B on a bearing and then from B to C on a bearing , AB = BC.

(a) How is angle ABC = .

(b) Solve bearing of C from A.

### Explanation

Here, the boat sails from A to B on a bearing and then from B to C on a bearing , AB = BC. Let take North = N

(a) Here,

= and =

Now, DAB =

Now, DAB and will be alternate interior angles which are of same angles: .

So, =

Now,

(b) Here, as given AB = BC and .

• So, from A to C bearing will be
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