Question

Find the cost of a pen. (i) the total cost of 99 pens, 37 pencils, 85 erasers and 19 chocolates is $1344. (ii) the total cost of 74 pencils, 38 chocolates, 98 pens and 174 erasers is $1688.

Answer 1

₹9999999 is the answer boy

Answer 2

Answer:

x=10

Step-by-step explanation:

99x+37y+85z+19w=1344

if u closely absorb the second statement except pen all others are multiples of 2....that is in 1:2 ratio...so we can form sentense as

i) 37y+85z+19w=1344-99x

ii) sub the above in statement 2

    98x + 2( 1344 - 99x) =1688

    98x +2688 -198x =1688

    100x =1000

    x= 10