You are watching: Forty five is 30 of what number

**Given**:

Forty five percent of a given number is 30 less than three fifth of that number.

**Calculation**:

Let the given number be x.

According to the question,

(3/5)x – (45% of x) = 30

⇒ (3/5)x – (45/100)x = 30

⇒ (3/5)x – (9/20)x = 30

⇒ L.C.M of denominator (5, 20) = 20

⇒ <(3 × 4)x – (9)x>/20 = 30

⇒ 3x = 600

⇒ x = 600/3 = 200

**∴**** The number is 200.**

**Q1.**Raman gets 30% marks in an examination but still fails by 30 marks. To qualify in the exam, 60 percent marks is mandatory. What are the maximum marks for the exam?

**Q3.**A’s salary is firstly increased by 25 percent and then again increased by 20 percent. What is the overall percentage increase in A’s salary?

**Q5.**Anil donated 30 percent of his income to the school and deposited 70 percent of the remaining in his bank. nowIf he has Rs 9765, then what is Anil's income?

**Q6.**If the price of a mango is reduced by 10%, then X can buy 2 more mangoes for Rs. 360. What is the reduced price of the mango?.

**Q9.**Income of A is 20 percent more than the income of B and income of B is 30 percent more than the income of C. The income of C is (approximately) how much percentage less than the income of A?

**Q10.**If the amount of A is 45% more than B, C is 60% less than A and B together and D is 20% less than C and the amount difference between B and D is Rs. 21,600 then find the amount of C.

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**Q1.**Columbus started his journey from Lucknow to Kolkata which is 200 km, at the speed of 40 km/h. then he went to Banglore which is 300 km at the speed of 20 km/h. Further he went to Ahmadabad which is 500 km at the speed of 10 km/h. The average speed of Columbus.

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**Q6.**The ratio of P, Q and R is 3 : 5 : 8 respectively. If their sum is 400, then what is the difference between P and R?

**Q7.**P and Q alone can do a piece of work in 18 and 45 days respectively. They started the work together and P left after 3 days of starting the work. Q finished the remaining work alone. In how many days was the work completed?

**Q8.**Train 1 leaves A at 8:00 AM and reaches B at 2 PM. Train 2 leaves B at 10 am and leaves A at 6 pm. Around what time do both trains meet?

**Q9.**Four bells ring at intervals of 5, 10, 12 and 15 minutes respectively. If they start ringing together at 3 o'clock, after what interval of time will they ring together and how many times will they ring together in 18 hours?

**Q10.**A 220 meters long train crosses an electric pole in 11 seconds and crosses another train of equal length running in the opposite direction in 8 seconds. What is the speed of the second train?