200 b u tt o n s x b u tt o n s − − 50 s hi r t s 350 s hi r t s ∣ cross m u lt i pl y 50 x = 200 × 350 ∣ d i v i d e b o t h s i d es b y 50 x = 50 200 × 350 x = 4 × 350 x = 1400 A n s w er : 1400 b u tt o n s /350 s hi r t s
The worker would use 1400 buttons to make 350 shirts, based on the rate of 200 buttons for 50 shirts. This was calculated using a proportion. The calculated amount shows the total based on the given button-to-shirt ratio.
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