Explanation

Let youngest child's age = x

Other ages = x+5, x+10

Sum of ages = x + (x+5) + (x+10) = 36

3x + 15 = 36

3x = 21

x = 7

Last verified on 19-03-2026

Explanation

Time spent washing 3 cars = 3x

Time spent putting away = 10 minutes

Total time = 85 minutes

Equation: 3x + 10 = 85

Last verified on 19-03-2026

Explanation

Length = 12 m

Width = 7 m

Perimeter = 2(L + W)

= 2(12 + 7)

= 2 × 19

= 38 meters

Last verified on 19-03-2026

Explanation

Let numbers be 5x and 4x.

5x - 4x = 10

x = 10

Largest number = 5x

= 5 × 10

= 50

Last verified on 19-03-2026

Explanation

Mean proportion between 5 and 45 is √5×45

= √225

= 15

Last verified on 19-03-2026

Explanation

Faheem : Imran : Naveed

= 80,000 : 70,000 : 50,000

= 8 : 7 : 5

Last verified on 19-03-2026

Explanation

Men : Women = 4 : 5

Total parts = 4 + 5 = 9

Women = (5/9) × 45

= 25

Last verified on 19-03-2026

Explanation

Let's find the cost price:

Selling price = Rs. 1425

Loss = 5%

Cost price = 1425 × 100 / 95

= 1425 × 20/19

= 1500

Last verified on 19-03-2026

Explanation

Let's find the number:

35% × x = 140

0.35x = 140

x = 140 / 0.35

x = 400

Now, 75% of 400:

= 0.75 × 400

= 300

Last verified on 19-03-2026

Explanation

Let's simplify:

(2x + 3) - (x + 2)

= 2x + 3 - x - 2

= x + 1

Last verified on 19-03-2026