# IGCSE Mathematics Paper-1: Specimen Questions with Answers 161 - 163 of 175

## Question number: 161

### Describe in Detail

There is a sale of 60 % discount on a shop of clothes. Vicky bought shirts of in this sale.

(a) How much did Vicky paid?

(b) The next day, all items were sold at 70 % of the original price. How much more would Vicky have saved if he had waited until the next day to buy the shirts?

### Explanation

Here,

(a) Price of shirts is and sale is of 60 %.

So, he saved.

So, he paid **. **

(b) Next day, all items were sold at 70 % of the original price.

So, , so he will saved more than saved in 60 % discount.

## Question number: 162

### Write in Short

Solve the simultaneous equations

### Explanation

Here,

**Simultaneous equations** are those who have the **unique solutions**.

Equations are

Now, add equation (II) into (I),

Now, put into

So,

Thus,

## Question number: 163

### Write in Short

In the right-angled triangle ABC, AC = 10 meters and angle . Calculate the length of BC.

### Explanation

Here, triangle ABC is right angled triangle,

Angle and AC = 10 m is given,

So,