Pls answer all 6 questions
Answers
Answer:
200
Step-by-step explanation:
X+18/100=236
100X+18X/100=236
118/100 X=236
The number = X=236*100/118 =200
Q :2
Answer:
1. a) 56. b) 799.
2. 200
3. 100
4. No change
5. Total Players = 150
6. C.P. = 670.
Step-by-step explanation:
1. a) If 100% = 50
then, 112% = ? (Cross multiplication)
112×50 112
______ = ____ = 56.
100 2
Therefore, 50 increased by 12% is 56.
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b) If 100% = 940
then, 85% = ? (Cross multiplication)
85 × 940 79900
__________ = _______ = 799.
100 100.
Therefore, 940 decreased by 15% is 799.
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2. If 118% = 236
then, 100% = ? (Cross multiplication)
100 × 236
________ = 100 × 2 = 200.
118
Therefore, the number is 200.
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3. If 80% = 80
then, 100% = ? (Cross multiplication)
100 × 80
_______ = 100 × 1 = 100.
80.
Therefore, the number is 100.
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4. Let's consider the number as 100.
If 100 is increased by 25%, then it will become 125.
125 × 100
_________ = 125.
100.
If 125 is decreased by 20%, it becomes 100 again.
125 × 80 10000
________ = _______ = 100.
100. 100.
Therefore, there will be no change in the number after calculation.
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5. Firstly, add all the percentages given.
= 30% + 28% + 22% = 80%
Remaining percentage play indoor games, who are total 30.
So, the total percentage of 30.players is 100% - 80% = 20%.
So, 20% = 30 people play indoor games.
To find number of cricket players.
20% = 30
30% = ? (Cross multiplication)
= 30 × 30
________ = 45.
20.
To find number of volleyball players.
20% = 30
28% = ? (Cross multiplication)
= 28 × 30
_________ = 42.
20.
To find number of badminton players.
20% = 30
22% = ? (Cross multiplication)
= 22 × 30
_________ = 33.
20.
Therefore, number of cricket players = 45, number of volleyball players = 42, number of badminton players = 33 and number of indoor games players = 30. Total number of players = 150.
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6. Profit = Loss.
If profit = x, then loss = x.
Difference between 810 and 530.
= 810 - 530 = 280.
Profit + Loss = 280
= x + x = 280.
2x = 280
x = 280 ÷ 2
x = 140.
Profit = Loss = 140.
C.P. = S.P + Loss / S.P. - Profit.
C.P. = 530 + 140 / 810 - 140.
C.P. = 670 Rs.
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Hope all the explanations are useful..