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प्रश्न
Set up an equation in the following case:
Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. (Take m to be the number of Parmit’s marbles.)
उत्तर
Let Parmit has m marbles.
5 × Number of marbles Parmit has + 7 = Number of marbles Irfan has
5 × m + 7 = 37
5m + 7 = 37
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संबंधित प्रश्न
Check whether the value given in the bracket is a solution to the given equation or not:
n + 5 = 19 (n = 1)
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = − 2)
By how much is 2x − 3y + 4z greater than 2x + 5y − 6z + 2?
Write the following statement as an equation:
6 times a number is 5 more than the number.
After 16 years, Fatima will be three times as old as she is now. Find her present age.
Write 'T' for true and 'F' for false for the statement given below:
`x=2/3` is solution of 2x + 5 = 8.
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
7 × 3 − 13 = 8
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
5 × 4 − 8 = 2x
Complete the entries in the third column of the table.
|
S.No. |
Equation |
Value of variable |
Equation satisfied Yes/No |
|
(a) |
10y = 80 |
y = 10 |
______ |
|
(b) |
10y = 80 |
y = 8 |
______ |
|
(c) |
10y = 80 |
y = 5 |
______ |
|
(d) |
4l = 20 |
l = 20 |
______ |
|
(e) |
4l = 20 |
l = 80 |
______ |
|
(f) |
4l = 20 |
l = 5 |
______ |
|
(g) |
b + 5 = 9 |
b = 5 |
______ |
|
(h) |
b + 5 = 9 |
b = 9 |
______ |
|
(i) |
b + 5 = 9 |
b = 4 |
______ |
|
(j) |
h − 8 = 5 |
h = 13 |
______ |
|
(k) |
h − 8 = 5 |
h = 8 |
______ |
|
(l) |
h − 8 = 5 |
h = 0 |
______ |
|
(m) |
p + 3 = 1 |
p = 3 |
______ |
|
(n) |
p + 3 = 1 |
p = 1 |
______ |
|
(o) |
p + 3 = 1 |
p = 0 |
______ |
|
(p) |
p + 3 = 1 |
p = − 1 |
______ |
|
(q) |
p + 3 = 1 |
p = − 2 |
______ |
Solve the following riddles, you may yourself construct such riddles.
| Who am I? |
| For each day of the week Make an upcount from me If you make no mistake You will get twenty three! |
