Let the base be x. Required percent = x + y + xy/100 82 = x + 40 + 40x/100 42 = 140x/100 x = 30%
14 36 80 168 ? 696
Complete the series choosing the missing number.
110, 99, 86, ___, 54, 35.
47, 72, 122, ?, 297, 422
150, 158, 131, 195, 70, ?
324 972 486 1458 729 ?
...140, 146, 158, 176, ?, 230
45, 166, 607, 1568, 3249, ?
1000 100 20 ? 2.4 1.2
289 169 121 ? 25 9
...415 246 367 ? 335 310
...
