Advertisements
Advertisements
प्रश्न
Alka spends 90 % of the amount sent to her and saves Rs. 120 per month. Find the amount sent to her per month.
उत्तर
Suppose, the amount sent to Alka every month is x. She spends 90% of it.
∴ She saves 10 % of the amount, which is Rs 120
`∴ 120 = x ×10/100`
∴ 120 × 10 = x
∴ x = 1200
∴ Amount sent to Alka every month is RS 1200.
APPEARS IN
संबंधित प्रश्न
The divisor and quotient of the number 6123 are same and the remainder is half the divisor. Find the divisor.
The roots of the equation `ax^2+bx+c=0` will be reciprocal each other if
(a)a=b (b)b=c (c)=a (d)= none of these
If the roots of the equation` ax^2+bx+c=0` are equal then c=?
(a)`b/(2a)` (b) `b/(2a)` (c) `-b^2/(4a)` (d) `B^2/(4a)`
If the roots of the quadratic equation `px(x-2)+=0` are equal, find the value of p
Find the value of k for which the quadratic equation `9x^2-3kx+k=0` has equal roots.
Solve` 2x^2+ax-a^2=0`
Decide whether the following equation is quadratic equation or not.
x2 + 5x – 2 = 0
Decide whether the following equation is quadratic equation or not.
(m + 2) (m – 5) = 0
Decide whether the following equation is quadratic equation or not.
m3 + 3m2 – 2 = 3m3
Write the following equation in the form ax2 + bx + c= 0, then write the values of a, b, c for the equation.
x2 – 9 = 13
Vivek is older than Kishor by 5 years. The sum of the reciprocals of their ages is \[\frac{1}{6}\] Find their present ages.
Ranjana wants to distribute 540 oranges among some students. If 30 students were more each would get 3 oranges less. Find the number of students.
Solve the following quadratic equation.
`1/(x + 5) = 1/x^2`
If 3x + 5y = 9 and 5x + 3y = 7 find the value of x + y.
Solve any four of the following.
Find the value of y in the equation x + y = 12, when x = 5
Write the following equation in the form ax2 + bx + c= 0, then write the values of a, b, c for equation.
P(3+6p) = –5
When the son will be as old as his father today, the sum of their ages then will be 126 years. when the father was as old his son is today. The sum of their ages was 38 years. Find their presents ages.
Write the degree of Polynomial 5x2 + 2x + 3x4 + 4.
In an orchard there are total 200 trees. If the number of trees in each column is more by 10 than the number of trees in each row, then find the number of trees in each row
