the product of two 2-digit number is 3285.if the product of their units digit is 15 and that tens digit is 28 find the number
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Answered by
23
15=5×3
28=7×4
there are two possibility (1) 73&45
(2) 75&43
find product
73×45=3285
so number are 73&45
28=7×4
there are two possibility (1) 73&45
(2) 75&43
find product
73×45=3285
so number are 73&45
Anonymous:
You didnt mention about 14 x 2=28
14 is two digit number
so if 14 comes at tens place then number is fromed is 3 digit
see in the question 2 digit number is required
Ah ok!My mistake
I meant it would be good if u mention that in ur answer, to ensure every combination was taken in.
Answered by
1
Answer:
Two-digit numbers are 73 and 45 whose product is 3285.
Step-by-step explanation:
Let us assume that pq and xy are two-digit numbers.
In which q and y are at unit place,
Product of q and y is 15
q × y = 15
Only 3 and 5 are the possible combination that gives the product 15
Therefore, unit place numbers are 3 and 5.
And p and x are at tens place,
product of p and x is 28
p × x = 28
Only 7 and 4 are the possible combination which gives product 28
Therefore, tens place numbers are 7 and 4.
So, the possible numbers are 73, 75, 43, 45
In which 73 and 45 is the only combination which gives the product of 3285
73 × 45 = 3285
Therefore, 73 and 45 are two-digit numbers whose product is 3285.
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