Question
A train crosses a pilar in 20 seconds and a platform of
length 300 metres in 25 seconds,then what will the 120% of the length of the train.Solution
Let the length of the train is 'x'metres. ATQ, (x/20) = {(x + 300)/25} Multiplying throughout by '5', we get Or, (x/4) = {(x + 300)/5} Or, 5x = 4x + 1200 So, x = 1200 So, required value = 1200 X 1.2 = 1440
What will be the value of expression if the signs ‘(-)’ and ‘(+)’ are interchanged?
75 + 42 – 6 × 56 ÷ 7 + 6 × 3 – 2
...If A denotes ‘addition’, B denotes ‘multiplication’, C denotes ‘subtraction’, and D denotes ‘division’, then what will be the value of t...
Which two signs should be interchanged in the following equation to make it correct:
490 ÷ 70 + 5 × 28 – 15 = 48
If '+' means '÷', '-' means ' X ', ' X ' means '+', '÷' means '-', what will come in place of the question mark(?)?
34 X 272 + 34 - 8 ÷ 25 = ?...
If + means ÷, × means –, – means ×, ÷ means +, then 32 + 16 – 13 x 18 ÷ 2 = ?
In a certain code language, '+' represents ' X ', ' - ' represents '+', '÷' represents '-' and ' X ' represents '÷'. Find out the answer to the follow...
In a certain code language, '+' represents '-', '-' represents 'x', 'x' represents '÷' and '÷' represents '+'. Find out the answer to the following qu...
If, 'A $ B' means 'A + B', 'A & B' means 'A ÷ B', 'A % B' means 'A X B' and 'A # B' means 'A - B', then what is the value of the given equation?
Select the correct combination of mathematical signs that can sequentially replace '*' sign and balance the equation given below.
88 * 16 * 4 * 1...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
32 * 366 * 6 * 2 * 134 = 20