randRange(2, 3) _.map(_.range(N), function() { return randFromArray(["decimal", "percentage", "fraction", "fraction"]); }).slice(0, N) _.map(TYPES, function(x) { return randFromArray([2, 4, 5, 8, 10, 20, 25, 40, 50, 100]); }) _.map(DENOMINATORS, function(d) { return randRangeNonZero(-d * 2, d * 2); }) _.map(DENOMINATORS, function(d, i) { return roundTo(3, NUMERATORS[i] / d); }) _.map(TYPES, function(t, i) { if (t === "fraction") { return fraction(NUMERATORS[i], DENOMINATORS[i]); } else if (t === "percentage") { return roundTo(3, 100 * DECIMALS[i]) + "\\%"; } else { return DECIMALS[i]; } }) (function() { var arr = []; for (var i = 0; i < N; i++) { if (TYPES[i] !== 'decimal') { arr.push(i); } } return arr; })() (function() { var x = 0; for (var i = 0; i < N; i++) { x += NUMERATORS[i] / DENOMINATORS[i]; } return roundTo(3, x); })()

`NUMS[0] + NUMS[1] + NUMS[2] = {?}`

SOLUTION
First get all of the numbers in decimal form.

`\qquadNUMS[i] = DECIMALS[i]`

`\qquad NUMS[i] = fraction(roundTo(3, NUMERATORS[i] * 100 / DENOMINATORS[i]), 100) = DECIMALS[i]`

Now we have:

`\qquad DECIMALS[0] + DECIMALS[1] + DECIMALS[2] = {?}`

`\qquad DECIMALS[0] + DECIMALS[1] + DECIMALS[2] = SOLUTION`