Related Questions

A certain dentist specializes in implanting gold and silver teeth in his patients mouths .He charges $ 650 for a gold tooth an $ 325. for a silver tooth. If his told fees for implanting gold and silver teeth last week were $ 15, 925 in total and he implanted five more gold teeth that silver teeth, how many teeth in total did he implant over the week?
A 33
B 32
C 31
D 34
In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
A 40
B 50
C 70
D 90
The composition of silver solder is
A Silver, copper, zinc
B Silver, tin, nickel
C Silver, lead, zinc
D Silver, copper, aluminium
There are n students in a school . If r% among the students are 12 years or younger, which of the following expressions represents the number of students who are solder than 12?
A n(1-r)
B n ( 100-r) /100
C n(1-r)/100
D 100(1-r)n
_______ is a hard solder.
A Tin-lead
B Tin-silver-lead
C Copper-zinc
D None of the above
Solder is an alloy of
A Copper and aluminium
B Tin and lead
C Nickel, Copper and zinc
D Silver, copper and lead
Solder metal is an alloy of
A Lead and tin
B Lead and antimony
C Copper and zinc
D Copper and tin
Solder is an alloy consisting of
A Tin, antimony, copper
B Tin and copper
C Tin and lead
D Lead and zinc
The value of 10 pounds of gold is d dollars, and a pound of gold has the same value as p pounds of silver. what i the value, in dollars of one pound of silver?
A 10d /p
B 10p /d
C d /10p
D p/10d
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)
A the gold piece will weigh more
B the silver piece will weighmore
C both silver and gold pieces weigh equal
D weighing will depend on their masses

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