Question

8. A boy obtained 88% marks out of a total of 500 marks. How many marks did he get?
9. An alloy consists of 13 parts of copper, 7 parts of zinc and 5 parts of nickel. What is percentage compte
of the alloy?
10. Ram loses 20% of his money. After spending 25% of the remainder, he has 480 left. How much more
did he originally have?
11. Al a car park, 50% of the vehicles parked were cars. 30% were motorcycles and the rest of the
40 vehicles were vans.
- Calculate the number of motorcycles parked there
40 cars left the car park, what percentage of the vehicles parked there were cars.
12. There are 120 boys and 57 girls in a school. If 5% of the boys leave and no new students are admite
what percentage of the whole school will be giris?
Ankita obtained 60 marks out of 70 in Maths, 50 out of 60 in Science, and 40 out of 50 in English. Wha
What were her percentage marks on the whole?
14. In an election, a candidate got 65% of the total valid votes 8% of the total votes was declared invalidt
the total number of votes were 600000 find the number of valid votes polled in favour of the candidate
Sod
*3
Sol
122​

Answer 1

Answer:

Ans 8 )Let marks obtained be X

Total marks = 500

Marks % = 88%

Wkt ,

Marks obtained / total marks ×100 = marks %

X/500 × 100 = 88

X = 88 × 500 /100 = 88 × 5 = 440 marks.

Answer 2

Answer:

10) ANS - rs. 320

Step-by-step explanation:

let the actual amount with ram be X.

So, amount left after loosing 20% of X

= 80x/100. [ by unitary method]

now he spent 25%of the remaining i.e. 80x/100 rupees and had 480 rupees

=> 80x/100 * 75/100 = 480

=> 6x = 4800

=> x = 800

therefore

answer = 800 - 480 = 320