Question

One girl can eat 112 chocolates in half a minute, and her boy friend can eat half as many in twice the length of time. How many chocolates can both boy and girl eat in 12 seconds ?

Answer 1

Answer:

56

Step-by-step explanation:

G can eat 112per 30 sec

G can eat 112x12/30 per 12 sec

b can eat 56 per 60 sec

B can eat 56x12/60 per 12 sec

total chocolates by both of them = 112x12/30+56x12/60=56

Answer 2

Answer:

Number of chocolates girl and boy can eat in 12 seconds = 56

Step-by-step explanation:

One girl can eat 112 chocolates in half a minute

⇒ One girl can eat 112 chocolates in 30 seconds

$\implies\text{No. of chocolates girl can eat in 1 second = }\frac{112}{30}\\\\\implies\text{Number of chocolates girl can eat in 12 seconds = }\frac{112}{30}\times 12=44.8$

Also, her boy friend can eat half as many in twice the length of time

⇒ Her boyfriend eats 56 chocolates in 60 seconds

$\implies\text{No. of chocolates her boyfriend can eat in 1 second = }\frac{56}{60}\\\\\implies\text{No. of chocolates her boyfriend can eat in 12 seconds = }\frac{56}{60}\times 12=11.2$

So, Number of chocolates they both can eat in 12 seconds = 44.8 + 11.2

                                                                                                   = 56

Hence, Number of chocolates girl and boy can eat in 12 seconds = 56