Please answer fast. It's urgent.
The most appropriate answer with very good explanation will be mark as the BRAINLIEST answer.
Help me out with these questions. Also, explain me the method you used to answer these questions. WITH COMPLETE EXPLANATION:
i) A number is as much greater than 17 as it is less than 47. Find the number.
ii) One-third of a number exceeds one-fifth of the number by 6. Find the number.
iii) Find two numbers such that one of them exceeds the other by 8 and their sum is 80.
iv) A piggy bank contains ₹ 1 coins, ₹ 2 coins, ₹ 5 coins and ₹ 10 coins. The number of ₹ 10 coins is four times the number of ₹ 5 coins, eight times the number of ₹ 2 coins and sixteen times the number of ₹ 1 coins. If all the money in the piggy bank adds upto ₹ 555, find the number of ₹ 10 coins in it.
v) The ages of Asha and Sushma are in the ratio 7:2. Eight years hence, the ratio of their ages will be 5:2. Find their present ages.
vi) A man sold an article for ₹ 432 and gained 8% on it. Find the cost price of the article.
vii) A man is engaged as a typist for 30 days on the condition that he receives ₹ 175 for each day he works and has to pay ₹ 50 for each day he remains absent. If he receives ₹ 4125 in all, for how many days does he remain absent?
viii) A bookseller buys 1000 books from a publisher. He sells some books a the marked price of ₹ 24 each and disposes of the remaining books at sale price of ₹ 22.50 each. If his total receipts from the sale of books are ₹ 23670, find how many books were sold at each price.
I know the answers, but I don't know the methods to solve these questions. Please help me out guys. 25 points reward.
Answers
Answered by
8
1 answer
One number is as much as greater than seventeen and less than 47
Let the number equal to x
Equation will be
x-17=47-x
2x equals to 64
x equals to 32
2 answer
Let the no. Is x
ATQ.
x/3=x/5+6
x/3-x/5=6
Taking Lcm of 3 and 5 gives 15
5x-3x/15 equals to 6
2x equals to 90
x equals to 45
3 answer
Let the 2 numbers be x and y
Atq.
x equals to y +8
Or x-y=8 (eq 1)
And
x plus y is 80 (eq 2)
Applying elimination method on y..
x-y=8
x+y=80 (ADDITION HERE)
It gives 2x = 88 and x is 44
Substituting x in eq 1 gives
44-y =8
-y=8 - 44
-y=-36
And y is 36.
4 answer
Piggy bank has 1 2 5 and 10 rs coins.
Number of 10 rs coin is four times the number of 5 rs.. 8 times the number of 2 rs and 16 times of 1 rs.
Number of 10 rs coins equals to ?
And total sum is 555..
I CANT DO THIS.. MAYBE LATER
5 answer
Present ratio of their ages is 7 : 2
8 years hence the ratio becomes 5 : 2.
Let Age of Asha is 7x and Sushma 2x
Acc to ques
7x+8/2x+8=5/2
14x+16=10x+40
x equals to 6.
Age of Asha is 7x or 7*6=42
And Sushma is 2x or 12
6 answer
SP is 432
P percent is 8
CP=SP*100/100+p%
=432*100/108
=16*25
=400
One number is as much as greater than seventeen and less than 47
Let the number equal to x
Equation will be
x-17=47-x
2x equals to 64
x equals to 32
2 answer
Let the no. Is x
ATQ.
x/3=x/5+6
x/3-x/5=6
Taking Lcm of 3 and 5 gives 15
5x-3x/15 equals to 6
2x equals to 90
x equals to 45
3 answer
Let the 2 numbers be x and y
Atq.
x equals to y +8
Or x-y=8 (eq 1)
And
x plus y is 80 (eq 2)
Applying elimination method on y..
x-y=8
x+y=80 (ADDITION HERE)
It gives 2x = 88 and x is 44
Substituting x in eq 1 gives
44-y =8
-y=8 - 44
-y=-36
And y is 36.
4 answer
Piggy bank has 1 2 5 and 10 rs coins.
Number of 10 rs coin is four times the number of 5 rs.. 8 times the number of 2 rs and 16 times of 1 rs.
Number of 10 rs coins equals to ?
And total sum is 555..
I CANT DO THIS.. MAYBE LATER
5 answer
Present ratio of their ages is 7 : 2
8 years hence the ratio becomes 5 : 2.
Let Age of Asha is 7x and Sushma 2x
Acc to ques
7x+8/2x+8=5/2
14x+16=10x+40
x equals to 6.
Age of Asha is 7x or 7*6=42
And Sushma is 2x or 12
6 answer
SP is 432
P percent is 8
CP=SP*100/100+p%
=432*100/108
=16*25
=400
pinakimandal53:
Well, thanks for showing your kindness for helping me.
I answer 5, I am having little problem in constructing the equation. I understood whole question, just problem in constructing the equation.
In answer 5
Hint for answer 4 written in my book: "Let the number of Rs. 10 coins be x. Then, 10x + 5(x/4) +"2(x/8) + 1(x/16) = 555" I just can't understand the way of construction of equation.
In the hint given for 4th answer, 5(x/4) means that 5 is multiplied by a fraction x/4.
Answered by
3
Answer:
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Step-by-step explanation:
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