Randall wants to mix 42 lbs of nuts worth $2 per lb with some nuts worth $4 per pound to make a mixture worth $4 per lb. how man
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Answer:
25%
Step-by-step explanation:
Given that,
Initial cost of a t-shirt = $30
Final cost of a t-shirt = $37.50
We need to find percent of change. The percentage change in any value is given by :
Hence, the percentage error is 25%.
Here, we are given with four fractions to multiply two of them and to add two of them. If we add them directly by taking the LCM and adding them is not a similar way. We can clearly observe that in those four fractions, we have two fractions as common i.e, we have two fractions as same. If we have two fractions or numbers as same, we can solve the sum by an other concept called as distributive property. In this property, we multiply the common fraction with the sum of other two fractions. This concept can also be done with fractions as well as integers. So, let's solve!!
Group the non-common fractions in bracket.
First we should solve the numbers in bracket.
LCM of 20 and 25 is 100.
Multiply the numerators and denominators in the bracket.
Now, write both numerators in bracket with a common denominator.
Now, add the numerators in bracket.
Write the numerator and denominator in lowest form by cancellation method.
Now, multiply the numerators and denominators.
Number of pallets moved in 4.5 hours = 108
converting 4.5 hours in minutes we get,
4*60 + 0.5*60 = 240+30 = 270 minutes
So, 108 pallets were moved in = 270 minutes
1 pallet was moved in = minutes
As the tie will get over in 2 hours or 2*60 = 120 minutes, the number of pallets that can be moved will be = pallets.
Hence, 48 pallets can be moved before quitting time.