Question

Which of the following expressions is equal to –30.

(i) –20 – (–5 x 2) (ii) (6 x 10) – (6 x 5)

(iii) (2 x 5) + (4 x 5) (iv) (–6) x (+5)​

Answer 1

Answer:

option (iv) is the correct answer

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Answer 2

(–6) x (+5) is equal to -30.

Option iv) (–6) x (+5) is correct

Given :

The options :

(i) –20 – (–5 x 2)

(ii) (6 x 10) – (6 x 5)

(iii) (2 x 5) + (4 x 5)

(iv) (–6) x (+5)

To find :

The option which is equal to -30

Solution :

We need to solve each expressions :

(i) –20 – (–5 x 2)

= -20 - (-10)

= - 20 + 10

= -10

-10 is not equal to -30

ii) (6 x 10) – (6 x 5)

= 60 - 30

= 30

30 is not equal to -30

iii) (2 x 5) + (4 x 5)

= 10 + 20

= 30

30 is not equal to -30

iv) (–6) x (+5)

= -30

Hence, option iv) (–6) x (+5) is equal to -30.

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