Explanation

= (5x60)+(10x30)+(15x20) / 30

= 30

Explanation

8: 200*100 = (8*100): 200 = 800: 200 = 4

Explanation

((S.P - C.P)/C.P)*100 will give you the answer.

=((500–450)/450)*100

=(50/450)*100

=(1/9)*100

=11.11% gain

Explanation

Thus, nth term = a+(n−1)

d=(p+q−1)+(n−1)×(−1)

d =(p+q−n)

Explanation

Simplify the given expression

ND-8-08-2023

Explanation

 equivalent ratios for 3: 7 is  9: 21 

Explanation

= (x -3 + x + 3)/2

= (2x - 3 + 3)/2

=2x / 2

= x

SH14-8-2023

Explanation

A sequence is arithmetic if the common difference of all terms of a sequence is the same.

A sequence is geometric if the common ratio of all terms of sequence is the same.

A common difference is the difference between consecutive numbers in an arithmetic sequence

Sh14-8-2023

Explanation

In 1 hour, A can do 1/6th of the work

In 1 hour, B can do 1/12th of the work

In 1 hour, Both A & B work 

3/12 + 1/4

Answer: 4 hours

SH14-8-2023

Explanation

If x, y, and z are in proportion, then the correct option will be x: y:: y: z.

Step-by-step explanation:

A proportion is an equation in which two ratios are set equal to each other.

If 3 numbers are in proportion to each other then their ratios should be equal to one another.

ND12_8_2023