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Platinum Package 8_Linear Equations_2
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Question 1 of 10
1. Question
Correct
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 2.5575 
Question 2 of 10
2. Question
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Correct Answer:

Question 3 of 10
3. Question
The perimeter of a rectangular field is 24 metres and its width is w metres. The formula used to find its length is
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Incorrect
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Correct Answer:

Question 4 of 10
4. Question
The present age of father is four times the age of the son. After 5 years their ages will add to 60 years. The present ages of son and father will be?
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 10 years , 40 years

Question 5 of 10
5. Question
Harry has two times as many five rupee coins as he has one–rupee coins. If in all he has sum of Rs. 66, how many denominations of each coin does he have?
Correct
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 6 onerupee coins , 12 five rupee coins
Explanation:
Let the number of onerupee coins be x
Number of fiverupee coins = 2x
xX1 + 2x X 5 = 66
11x = 66
x =6
Number of rupee one coins = 6
Number of rupee five coins = 12 
Question 6 of 10
6. Question
The sum of three consecutive multiples of 5 is 75 .The highest of these multiples is? (Fill in the blanks)
Correct
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 30
Explanation:
Let three consecutive multiples of 5 be x , x+5, x+10
x+x+5+x+10 = 75
3x+15 = 75
3x = 60
x = 20
Thus, multiples are 20, 25, 30 
Question 7 of 10
7. Question
The sum of two natural numbers is 70. The ratio of the two numbers is 3:4. The larger of two numbers is
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 40

Question 8 of 10
8. Question
Mack has a total of Rs.570 as currency notes in the denominations of Rs.10, Rs.20 and Rs 50.The ratio of Rs 10 and Rs20 notes is 4: 5. If total number of currency notes Mack has is 30, how many notes of denomination of Rs 10 does he have?
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Incorrect
OOPS! Incorrect Answer
Correct Answer: 12
Explanation:
Let the number of Rs.10 and Rs. 20 notes Mack has is 4x and 5x.
The number of Rs. 50 notes Mack has = 30 – (4x+5x)
= 30 – 9x
10 X 4x + 20 X 5x + 50 X (30 9x) = 570
40x+100x+1500 – 450x =570
140x450x = 570 1500
310 x = 930
x= 3
The number of Rs.10 notes = 4x = 4 X 3 =12
The number of Rs. 20 notes = 5x = 5 x 3 = 15
The number of Rs.50 notes = 30 – 9×3 = 30 – 27 = 3 
Question 9 of 10
9. Question
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Correct Answer:

Question 10 of 10
10. Question
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OOPS! Incorrect Answer
Correct Answer: 7