Question
Three numbers are in the ratio 2:5:7. If the difference
between the sum of the smallest and the largest number and the sum of the smallest and the second largest number is 15, then find the largest number.Solution
ATQ;
Let the three numbers be 2x, 5x, and 7x, respectively.
ATQ,
(2x+7x) − (2x+5x) = 15
9x−7x=15
2x=15
x=7.5
Therefore, the largest number = 7x = 7 × 7.5 = 52.5
19.86% of 145.12 1/2 × 65.12 = ? × 2.12
?% of 399.97 = 11.982 + 16.13 × 4.16 – 35.99
? + 163.99 – 108.01 = 25.01 × 6.98
A car travels 150 miles at a constant speed of 50 miles per hour. It then makes a 30-minute stop before continuing its journey at a constant speed of 60...
What approximate value should come in the place of question mark in the following questions?
(98.6% of 405.4) − (29.8 × 9.7) = ?
12.99 × 9.99 + ? × 7 + 240.001 = 21.012
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
?% of (144.31 ÷ 17.97 × 60.011) = 239.98
(44/25) ÷ (154/199.5) × 419.91 = ? – (11.11)3
32.052- 22.03 x 24.199 - 15.18 x 11.04 = ?
