Explanation

Let's denote the cost of an apple as A and the cost of a mango as M.

Given equations:

2A + 3M = 86 ... (1)

4A + M = 112 ... (2)

Multiply equation (2) by 3:

12A + 3M = 336 ... (3)

Subtract equation (1) from equation (3):

(12A - 2A) + (3M - 3M) = 336 - 86

10A = 250

A = 250 / 10

A = 25

Explanation

Explanation

Jamal is Payal’s brother, and Payal is Shahid’s daughter.

This means Shahid is Jamal’s father.

Since Raheel is Shahid’s brother, Raheel is Jamal’s uncle.

Explanation

let

first number=x

2nd number will be= x+2

3rd number will be =x+4

Condition

x+x+2+x+4=66

3x+6=66

3x=66-6

3x=60

x=60/3=20

first number=20

2nd number=20+2=22

3rd number=20+4=24

Explanation

We are given that 10 workers complete the work in 40 days.

Step 1: Find total work in worker-days

Total work = 10 workers × 40 days = 400 worker-days

Step 2: Find time for 20 workers

Time required = 400 worker-days ÷ 20 workers
= 20 days

Explanation

According to the question, Bachal is now three times as old as his son,

so, x = 3y

five years before their ages would have been, x-5 and y-5. And the question says the Bachal was four times as old as his son,

x-5 = 4( y -5)

x-5= 4y -20

x-4y + 15 = 0

3y - 4y + 15 =0 , we already know x = 3y

y = 15 and x = 45

The Bachal is presently 45 and the son is 15

Explanation

let the maximum marks be x

Candidate A score = 20% of x

= 20/100 (x)

=> x/5a

Candidate fails by 50 marks

Hence , candidate would have passed if 50 marks are added to his marks :

x/5 +50 => (x+250)/5

Now, score of Candidate B

40% of x

=> 40/100 (x) =>2x/5

A.T.Q

2xs/5 - 30

=> (2x-150)/5

both the equations are equal as both the equations justify minimum passing marks

Hence, (x+250)/5 = (2x-150)/5

cancelling 5 from both sides

x+250 = 2x - 150

x = 400

Explanation

4 Men and 6 Women take 8 days. So TOTAL WORK = 32 MD + 48 WD

 (where MD= Mandays, & WD = Womandays, a unit of work) ……(eqn1)

3 Men and 7 Women take 10 days. So, TOTAL WORK = 30 MD + 70 WD …. (eqn2)

Equating the total work,

32 MD + 48 WD = 30 MD + 70 WD

=> 2 MD = 22 WD

=> 1 MD = 11 WD

So, replacing man days in eqn2,

TOTAL WORK = 400 WD

Now, 10 women will complete 10 WD of work in one day.

To complete 400 WD of work,

Time needed = (400 WD)/(10 WD) = 40 Days

Explanation

Monthly expenditure for the family of 9: Rs. 4800 ÷ 8 = Rs. 600

Monthly expenditure per person: Rs. 600 ÷ 9 = Rs. 66.67

Total expenditure for 24 persons in 16 months: Rs. 66.67 × 24 × 16 = Rs. 25600

Explanation

To Find the area of the uncut part:

= 20 x 15

= 300

Now Make these numbers a fraction;

= 300 / 1200

= 3/12

= 1/4

Therefore, 1/4 part remains uncut.