Explanation

Let's assume the maximum marks in each subject are 100. Then, the student's total marks in the three subjects are:

75 + 80 + 85 = 240

If the marks of another subject are added, the total marks become:

240 + x (where x is the marks obtained in the fourth subject)

The average percentage cannot be less than 60% because:

• If the student scores 0 in the fourth subject, the total marks would be 240, and the average percentage would be (240/400) x 100% = 60%.
• If the student scores any marks in the fourth subject, the average percentage would be higher than 60%.

Explanation

25 percent *60

= (25/100)*60

= (25*60)/100

= 1500/100

= 15

Explanation

• To convert a decimal to a percentage, multiply by 100:
  

$0.09\times 100=9\mathrm{\%}$

Explanation

Cost Price of 56 kg rice = Rs.

(26 × 20 + 30 × 36)

= Rs. (520+1082) = Rs.1600.

Selling Price of 56 kg rice = Rs.

(56 × 30)

= Rs. 1680.

Profit = Selling Price - Cost Price = 1680 - 1600.

Profit Percentage = Profit / Cost price × 100

= 800/1600 × 100 = 5%

Explanation

25% of 200 is calculated by

multiplying 200 by 25/100,

which equals 50.

Explanation

To solve this problem, you need to use the concept of profit percentage and the formula:

Profit = Selling Price - Cost Price

Given:

Selling Price = Rs. 118

Profit = 50% of Cost Price

Let's calculate the Cost Price:

Profit = (50/100) x Cost Price

Profit = Rs. 118 - Cost Price

Substitute the profit value:

(50/100) x Cost Price = Rs. 118 - Cost Price

Simplify and solve for Cost Price:

Cost Price = Rs. 78.66

Explanation

Discount price=Market price(1-discount price/100)

70=x(1-20/100)

70=x(1-1/5)

70=x(4-1/5)

(70)(5)=4x

350=4x

x=350/4

x=87.5

SH18-8-2023

Explanation

To find the percentage, divide 25 by 75 and multiply by 100:

25 ÷ 75 = 0.33

0.33 × 100 = 33%

Explanation

1 minute= 60 seconds

27 minutes = 1620

Explanation

To find 25% of 150, multiply 150 by 0.25:

150 × 0.25 = 37.5.

Therefore, 37.5 is 25% of 150.