Question

A hotel has enough food for 20 people for 6 days. How long would the food last if there were 10 more people joined ?​

Answer 1

THIS IS A CASE OF INVERSE PROPORTIONS

LET X BE THE NUMBER OF DAYS THE FOOD LASTS FOR!

20 × 6 = 30 × X

X = (20 × 6) / 30

X = 120 / 30

X = 4

THE ANSWER IS 4 DAYS!