SOLUTION: A jar contains 5- gram bolts & 10 gram bolts. The contents of the jar weigh 3.8 kg. If there are 460 bolts, how many 10 gram bolts are in the jar?
----------- ----------- --------
Algebra.Com
Question 40171: A jar contains 5- gram bolts & 10 gram bolts. The contents of the jar weigh 3.8 kg. If there are 460 bolts, how many 10 gram bolts are in the jar?
----------------------------------------------------------------------------
four more than 5 times a number is 24. Find the number.
Thanxs
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A jar contains 5- gram bolts & 10 gram bolts. The contents of the jar weigh 3.8 kg. If there are 460 bolts, how many 10 gram bolts are in the jar?
Let number of 10 gram bolts be "x"
Then number of 5 gram bolts is "460-x"
Weight of the 10 gram bolts is 10x grams
Weight of the 5 gram bols is 5(460-x)=2300-5x grams.
EQUATION:
wt. + wt.= 3800 grams
10x+2300-5x=3800
5x=1500
x=300 (number of 10 gram bolts)
460-x=160 (number of 5 gram bolts)
----------------------------------------------------------------------------
four more than 5 times a number is 24. Find the number.
Let the number be "x".
EQUATION:
5x+4=24
5x=20
x=4 (the number is "4"
Cheers,
Stan H.
RELATED QUESTIONS
a jar contains 5-gram bolts and 10-gram bolts. the contents of the jar weigh 2.35 KG... (answered by Earlsdon)
A jar contains 5-gram bolts and 10-gram bolts. The contents of the jar weigh 2.35kg. If... (answered by checkley71)
The probability of a bolt being faulty is 0.3. Find the probability that in a random... (answered by Edwin McCravy)
If 1% of the bolts produced by a certain machine are defective, find the probability that (answered by ewatrrr)
There are bolts and nuts in a box. The number of bolts are 66 times as many as nuts {{{B (answered by akmb1215)
Machine A produces bolts at a uniform rate of 120 bolts every 40 seconds and machine B... (answered by fractalier)
A machine produce 10% defective bolts. 400 bolts produced by the machine are
randomly... (answered by ewatrrr,ikleyn)
suppose that a machine shop orders 400 bolts from a supplier. to determine whether to... (answered by Fombitz)
Given that 8 bolts and 6 nuts weigh 138 grams and 3 bolts and 5 nuts weigh 71 grams, find (answered by josgarithmetic)