Question
Harvey, Mike, and Donna started a business together,
with the ratio of Harvey's investment to Mike's being 5: x, and the ratio of Mike's investment to Donna's being 7:8. After 3 years, Donna's share of the total profit of Rs. 19,000 is Rs. 6,400. Determine the value of x.Solution
Ratio of investments: Harvey: Mike = 5: x Mike: Donna = 7: 8 Harvey: Mike: Donna = 35: 7x: 8x According to question, 8x/(35 + 7x + 8x) = 6400/19000 8x/(35 + 15x) = 32/95 760x = 32×35 + 32×15x 760x – 480x = 1120 280x = 1120 x = 112÷28 = 4
18 45 90 235 450 1125 2250
...42, 85, 172, 343, 687, 1375
1, 4, 20, 126, 1026, 10170
79, 152, 231, 314, 405, 500
Find the wrong no in the given number series.
11, 18, 32, 60, 112, 228
Find the wrong number in the given number series.
21, 11, 12, 19, 41, 105
- Find the wrong number in the given number series.
154, 137, 114, 84, 46, 11 - Find the wrong number, in the given number series.
2, 5, 11, 23, 47, 97, 191 23, 36, 53, 69, 95, 124, 155
109 106 101 94 86 74
...