# IGCSE Mathematics Paper-1: Specimen Questions with Answers 319 - 324 of 324

## Question 319

### Write in Short

Short Answer▾Choose one of the symbols given above to complete each of the following statements.

When x = 12 and y =-4, then

### Explanation

- Here x = 12 and y =-4
- So,
- So,

## Question 320

### Write in Short

Short Answer▾Solve the simultaneous equations.

### Explanation

Here given the 2 equations

… (1)

… (2)

Equation 1 multiplied by 2

… (3)

x value put in equation 1

## Question 321

Edit

### Write in Short

Short Answer▾The price of an item changed from $ 150 to $ 130. Then later the price decreased again from $ 130 to $ 100. Which of the two decreases was larger in percentage term?

### Explanation

- First decrease in percent
- second decrease in percent
- The second decreases was larger in percent term.

## Question 322

### Write in Short

Short Answer▾Write as a column vector.

### Explanation

- Here coordinates is
- The coordinates of the vector are

## Question 323

## Question 324

### Explanation

- Since the only number 3 and 7 go into evenly is 21.
- A lowest common multiple is the smallest unit that both numbers can evenly be divided by.
- Since you can evenly divide 21 by both 3 and 7 the following is true.
- 21 is the lowest common multiple of 3 and 7.