Explanation

Plain muffins = 21

Chocolate muffins = 1/4 of total (say x)

=> Plain = 3/4 of total = 21

=> 3/4 × x = 21

=> x = 21 × (4/3) = 28

Last verified on 07-02-2026

Explanation

Distance ∝ Time

90 km in 40 minutes

1 hour = 60 minutes

Distance in 60 minutes = 90 × (60/40) = 90 × 1.5 = 135 km

Last verified on 07-02-2026

Explanation

First, arrange the marks in order: 15, 16, 19, 21, 22, 25

Number of tests = 6 (even)

Median = avg of 3rd & 4th values = (19 + 21)/2 = 40/2 = 20

Last verified on 07-02-2026

Explanation

Perimeter of square = 100 cm

=> 4 × side = 100 cm

=> side = 100/4 = 25 cm

Grids per side = 10

Length of each grid = 25/10 = 2.5 cm

Last verified on 07-02-2026

Explanation

Total marks = 87 + 85 + 92 + 78 + 68 = 410

Number of subjects = 5

Average = 410/5 = 82

Last verified on 07-02-2026

Explanation

Temp inside freezer = -5°C

Temp inside refrigerator = 8°C

Difference = 8 - (-5) = 8 + 5 = 13°C

Last verified on 07-02-2026

Explanation

Cost price = $30

Profit % = 30%

Profit = 30% of 30 = 0.3 × 30 = $9

Selling price = Cost price + Profit = 30 + 9 = $39

Last verified on 07-02-2026

Explanation

Let the number be x.

8x = 112

x = 112/8

x = 14

Last verified on 07-02-2026

Explanation

Total cloth = 50m

Cloth used for 8 shirts = 8 × 6m = 48m

Remaining cloth = 50m - 48m = 2m

Last verified on 07-02-2026

Explanation

The correct order of precedence using the 'rules' of BODMAS

BODMAS stands for: Brackets, Orders (powers/roots), Division, Multiplication, Addition, Subtraction.

Last updated by NA on 25-April-2026