tough and tricky questions : decimals . the value of x is derived by summing a , b , and c and then rounding the result to the tenths place . the value of y is derived by first rounding a , b , and c to the tenths place and then summing the resulting values . if a = 5.45 , b = 2.95 , and c = 3.74 , what is y – x ?
to find x , we first sum a , b , and c , then round to the tenths place . 5.45 + 2.95 + 3.74 = 12.14 , which rounds to 12.2 . to find y , we first round a , b , and c to the tenths place and them sum them . so 5.4 + 2.9 + 3.7 = 12.0 . we are looking for y - x , which gives us 12.2 - 12.0 = 0.2 , or answer choice d .
subtract(add(add(divide(add(floor(multiply(5.45, const_10)), const_1), const_10), divide(add(const_1, floor(multiply(2.95, const_10))), const_10)), divide(add(floor(multiply(3.74, const_10)), const_1), const_10)), divide(floor(multiply(add(add(5.45, 2.95), 3.74), const_10)), const_10))