Question 1030152
The first pasta salad:
(1) {{{ 4 + 2/3 }}} cups of pasta
The second pasta salad:
(2) {{{ 4 + 2/3 + 1/3 }}} cups of pasta
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(2) {{{ 4 + 2/3 + 1/3 = 4 + 3/3 }}}
(2) {{{ 4 + 3/3 = 5 }}}
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Add (1) and (2)
{{{ 4 + 2/3 + 5 = 9 + 2/3 }}}
9 and 2/3 cups of pasta are needed 
for both pasta salads