Explanation

Let the number be x.

Twice the number = 2x

Packets are 4 more than twice:

2x + 4 = 38

Solve:

2x = 38 − 4

2x = 34

x = 17

Last verified on 12-05-2026

Explanation

Given:  

Total fixed fee = Rs 750  

Total for 30 cards = Rs 2250  

Processing cost for 30 cards = 2250 - 750 = Rs 1500  

Processing amount for one card = 1500 ÷ 30 = Rs 50

Last verified on 12-05-2026

Explanation

Father = F, Son = S

Given:

F + S = 72 …(1)

Six years ago:

F − 6 = 2(S − 6) …(2)

Solve (2):

F − 6 = 2S − 12

F = 2S − 6 …(3)

Put in (1):

(2S − 6) + S = 72

3S − 6 = 72

3S = 78

S = 26

Son’s present age = 26

Son’s age 6 years ago = 26 − 6 = 20 years

Last verified on 10-05-2026

Explanation

A’s 1 day work = 1/12

B’s 1 day work = 1/18

Combined work = 1/12 + 1/18

= (3 + 2) / 36 = 5/36

Time taken = 1 ÷ (5/36) = 36/5 = 7.2 days

Last verified on 10-05-2026

Explanation

The direction opposite of East is West.

It is one of the four cardinal compass directions

While East is the direction of sunrise (approx. 90), West is the direction of sunset (approx. 270)

Last updated by NA on 22-April-2026

Explanation

If Ali is walking North and turns right, his direction will be East. 

When facing North, a 90-degree turn to the right aligns with the East direction on a compass. 

Last updated by NA on 22-April-2026

Explanation

The pattern: 60, 100, 140... increases by 40 each cabin.  

That’s an arithmetic sequence: a₁ = 60, d = 40  

16th term = 60 + (16-1)×40 = 60 + 600 = 660  

Last verified on 12-04-2026

Explanation

Let son's age = x

Then Saeed's age = 2x

x + 2x = 60

3x = 60

x = 20

So Saeed's age = 2 × 20 = 40

Last verified on 11-04-2026

Explanation

Explanation