Explanation

Given:

Cost Price (CP) = Rs. 1500

Selling Price (SP) = Rs. 2550

Profit = SP - CP

= 2550 - 1500

= 1050

Percentage Profit = Profit/CP × 100

= 1050/1500 × 100

= 0.7 × 100

= 70%

Explanation

Simple Interest = Principal × Rate × Time

$$= 300 times tfrac{5}{100} times 1 = mathbf{15}.$$

Explanation

Since he saves 15% of his annual income, we can set up the equation:

15% of x = 500

To find the value of x, we can convert the percentage to a decimal by dividing by 100:

0.15x = 500

Now, divide both sides by 0.15:

x = 500 / 0.15

x = 3333.33

So, the man's annual income is Rs. 3333.33.

Explanation

The student fails by 22 marks, meaning the passing marks are:

178 + 22 = 200

Since 40% marks are required to pass:

40% of Total Marks = 200

Solving for Total Marks:

Total Marks = (200 × 100) ÷ 40 = 500

Explanation

Hassan borrowed Rs. 5000 for 5 years.

He paid an extra Rs. 500, which means he paid a total of Rs. 5000 (principal) + Rs. 500 (interest) = Rs. 5500.

Since he paid Rs. 500 as interest for 5 years, we can calculate the interest rate per annum (per year) as follows:

Interest = Rs. 500

Time = 5 years

Simple Interest (SI) = (Principal x Rate x Time) / 100

500 = (5000 x Rate x 5) / 100

Now, let's solve for Rate (interest rate per annum):

Rate = (500 x 100) / (5000 x 5)

= 2%

So, Hassan pays 2% interest per annum.

Explanation

= (5/100)*75

= (5*75)/100

= 375/100

= 3.75

Explanation

Distance covered in 1 hour =90km

Total distance =450 In how much time 450 kms will be covered= 450÷90=5 hrs In minutes=5×60=300  

car is traveling at 90 km/h, and it needs to cover 450 km. Time = Distance / Speed Time = 450 km / 90 km/h Time = 5 hours Since there are 60 minutes in an hour, the car will take 5 hours * 60 minutes/hour = 300 minutes to cover 450 km.

Explanation

 580 rupees is the correct answer 

600*12=7200 400*8=3200 300*10=3000 total=13400+save =13400+4000=17400 per day income=17400/30=580

Explanation

To calculate the interest:

Principal (P) = Rs. 40,000

Rate (R) = 3% per annum

Time (T) = 4 years

Interest (I) = (P * R * T) / 100

= (40,000 * 3 * 4) / 100

= 4800

The correct answer is: Rs. 4800

Explanation

If 105% of the number = $x$, then the number itself is $frac{x}{1.05}$

Therefore, 42% of the number is:

$$0.42 times frac{x}{1.05} = frac{42}{105} x$$