Answer:
(1) a + b = 34
(i) b = 1/2 f - 5
(m) B = 10 + 2S
(iv) 2p + 15b = 100
(v) Y + F = 200
(vi) yx + xy = 121
Step-by-step explanation:
* Lets explain how to solve the problem
(1)
∵ The sum of the two numbers is 34
- Let the first number is a and the second number is b
∴ a + b = 34
(i)
∵ The cost of a ball pen is 5 less than half the cost of a fountain pen
- That means the cost of the blue pen is less than the cost of the
fountain pen
- Let the cost of the ball pen is b and the cost of the fountain pen is f
∴ b = 1/2 f - 5
(m)
∵ Bhargavi got 10 more marks than double the marks of Sindhu
- That means the marks of Bhargavi is greater than the marks of Sindhu
- Let the marks of Bhargavi is B and the marks of Sindhu is S
∴ B = 10 + 2S
(iv)
∵ The cost of a pencil is $2 and a ball point pen is $15
∵ Sheela pays 100 for the pencils and pens she purchased
- Let the number of the pencils she purchased is p and the number
the ball point pen she purchased is b
∴ 2p + 15b = 100
(v)
∵ Yamini and Fatima together contributed 200 towards the Prime
Minister's Relief Fund
- Assume that Yamini contributed Y and Fatima contributed F
∴ Y + F = 200
(vi)
∵ The sum of a two digit number and the number obtained by
reversing the order of its digits is 121
∵ The digits in unit's and ten's place are 'x'and y'respectively
∴ The two digit number is yx and the number after reversing is xy
∴ yx + xy = 121
